Scott Christian
Hero
All of it doesn't matter. The only time it will matter is when somebody does the math, and the paladin will be behind warrior at 2.3 points per round. That is when all hell breaks loose. 

Since they tried all classes being identical, yes.
A big reason the attacker rolls for weapons, and the defense rolls for spells, is to make them feel different.
Except those things are not system changes. Yeah, they moved ASIs from species to background. But they had already had them floating, and as long as it is either +2/+1 or +1/+1/+1 it is balanced and does not actually matter long term. Giving Backgrounds feats is something they've been doing, and replacing a feature with a feat is a 1 to 1 change that doesn't effect anything beyond it.
Even taking a feat and rebalancing it is limited.
Redesigning an entire subsystem within a class structure is a much bigger undertaking. It is not as simply as some of these other changes, which may feel like they are big changes to you, but are functionally isolated.
So if you are a sorcerer and multiclass into Paladin for two levels (because it is 1/2) then you get additional spell slots even though paladins do not get spell slots, in addition to the piety points that you get that replaced the paladin's spell slots? And if you are a paladin who multiclasses into sorcerer and get spell slots, those no longer work with any of your "spells" since all your spell casting is uniquely tied to this piety point system?
So, you attack, deal damage, deal extra damage, cancel invisibility, grant advantage, and gain concentration... with it only costing some points? Sure, you CAN do that, but now it is quite a lot more powerful, because it doesn't take your bonus action to use. That isn't a minor power boost either.
Why not? Why not make all smiting even and equally important to the paladin?
Sisyphean? No. Again, it is POSSIBLE, but just like it is possible to build an entire house by yourself from scratch, doing so just so you don't need to bunk with your brother-in-law doesn't make sense when you could also just sleep on the couch in the living room. You are proposing a massive amount of change, for very little reason, except that you don't like that Divine Smite was made into a spell
How is it that pieces of the game used to create every character are "isolated," but suggesting that there might be different ways to build 1 class somehow impacts more of the system?
Again, if you don't like the proposed idea, fine. It was an idea about a different way of looking at a class (and a different way that uses things already used in 5e).
However, from my own personal perspective, the idea that this somehow is a massive design undertaking is ridiculous. (Especially given that, as I read more of the 5e24 previews, it appears that similar changes are being built into how monsters work by changing spells to special abilities.)
The one criticism I saw a few pages ago that I could understand is that someone said that this change would make the paladin too much like the monk and be an armored monk. I get that criticism, and it makes sense because the monk structure was part of the inspiration. I can't remember who had that criticism, but I get it.
Even with that, I would like to better understand the viewpoint that taking inspiration from one class (monk or warlock) is seen as less desirable than being redesigned to be more similar to other classes (wizard and cleric).
If you were to multiclass into sorcerer, it still works. You could gain sorcerer slots just like you would before - no change.
It's true that the piety points wouldn't work with sorcerer spells. Similarly, a paladin/barbarian doesn't get to benefit from unarmored defense while wearing heavy armor. I suppose you could lament that stacking Charisma casters on top of each other loses some power.
The glittering triple lindy would cost more points, as that's putting multiple effects onto one attack. (Though, even that assumes one particular way that the points would work. There are a few options for how it actually would.) Where a points-based-Smite paladin differs from a ki-based monk is in role and implementation; the monk is about mobility and striking multiple times, whereas the paladin tends to be geared more toward "stickiness" and hitting one foe hard.
Making all smiting one system would be part of how I would approach it. That's been covered.
It's more than just Divine Smite. The 5th Edition paladin has a role that could be met in other ways than making the class more like a typical caster. As mentioned multiple times, things like Lay On Hands, Divine Sense, Channel Divinity, and more function in ways that are not spells. Why not embrace more of that identity?
Additionally, it should again be noted that I'm not claiming that my way is the one way. It was a proposed alternative idea (which is such a massive design undertaking that the core idea was hashed out within a few posts).
So, you are taking something that does currently work [multiple classes with spellcasting features] and making it not work. While likely also taking the paladin "not a spell" abilities and making them not function with the spelll slots, which they currently do.
AGain, you can do that, but is it any surprise that WoTC chose NOT to do that, and make things more complex for the sake of just being different?
Cool... how many more points does it need to be to justify being a bonus action compared to a free action? Let's say Divine Smite costs 2 points, no action, for 2d8 damage. That's 1d8 per point. Glimmering smite does 2d6, and costs your bonus action, and takes your concentration, and grants advantage to every future hit with no save. The baseline system would have that cost 3 points, but is that going to be worth it for someone?
And of course, what happens when, by using this point system, a paladin at level 2 has say 6 points? In a spell slot system, they don't have access to Glimmering Smite yet, but they have enough points to cast it twice now. And what about upcasting? If the Divine Smite can be upcast freely, then even though in a slot system it can't currently be upcast, they could potentially take a critical hit, and deal +10d8 damage on a single blow at level 2.
All of these things CAN be addressed, the design CAN work. But is it worth the effort? Is it worth the page space to have 10 or 11 pages solely for the paladins unique system and unique abilities that are not spells, and therefore can't be moved to the spell section?
Core ideas are easy. Details are hard. Details are where systems break.
Again, is it supposed to be shocking to us that the designers decided to stick with the current design and make a few small tune-ups, as compared to ripping everything out and rebalancing an entirely new system that breaks a lot of the current ways the paladin functions, solely for the point of being different?
As far as the point costs in such a system, creating your own math through which to show how it wouldn't work via math chosen to show that it doesn't work isn't something I find convincing. But that's just my opinion on the matter.
If glittering smite isn't available until a certain level, it's logical to take that into consideration for which abilities would be possible to imbue into a weapon at certain points in a game.
Is it worth the effort? Being that we've discussed this over a few pages of a message board and I have ideas about how to address that while swipe-texting with one hand and eating a burger with the other, I'm inclined to believe that such a thing would be within the wheelhouse of a team of people who do game design for a living.
As it stands, I may write this up for home games and try it out.
You asked if I'm surprised about what WoTC chooses to do or not do. My answer is not particularly.
I didn't make them up. I used the same system they used for the Monk, that you want to use.
Dunning–Kruger effect?
Sure, feel free.
Okay, and I'll remind you, earlier the point of the discussion included "why doesn't WoTC just..."
yeah, but it might just be a buffer before death, sure with -10 to all rolls you are next to completely useless, you could still heal with your spells or teleport, but in direct combat, good luck.Yup. But they probably found that you might as well just die if you have worse than -5 to all d20 rolls!