DND_Reborn
The High Aldwin
Sure, and other features allow casters to add modifiers to cantrips.technically longsword does d8+strengthmod, with d8/d10 being average 4.5/5.5 you could almost say that a longword does 2d8 compared to a d8 cantrip like shocking grasp & in the hands of a fighter gets an extra 2d8 equivalent at the same levels a wizard gets abn extra 1d8 on that shocking grasp. Toss in a +1 +2 or +3 longsword and multiply the +n by the number of attacks while a +1/+2/+3 wand only applies once

But pointing out by default martials get to add modifiers and casters don't, only strengthens the argument in favor of casters.
Oh, I TOTALLY agree with this! But I think it is more due to every other class and subclass getting spells or spell-like features thrown in! What a horrible design choice. Let's just make magic so prevalent that it is nothing special anymore...It would be a playstyle preference for me. Sometimes, I feel as though magic is almost too prevalent in D&D. If there was a way to make it feel more special and not quite so readily available and everywhere, I'd prefer that.
(Which also requires rewriting a lot of other areas of the game, but I digress.)

My only concern is if you give too many, then in effect they will rarely, if ever, run out. You'll have to test it out to find a good balance probaby.However, I do see the reasoning for making cantrips easier to use. That's why I'd prefer Proficiency bonus + spellcasting mod (as opposed to only being prof mod).
Yep, spending HD is an under-utilized mechanic IMO. Maybe as an action spend 1 HD per spell level of the slot recovered? It would be limited, probably to 5th level slots or lower.Thematically, I like the idea of being able to spend HD to recharge slots because it can indicate the strain of trying to push beyond limits when necessary.
You'll do a lot of that I'm sure. I've been tinkering with 5E for two years now LOL!It's an off the top of my head idea. It's something I may play around with.
I'm not sure if 5E needs another rest period, but if it works for you and you're happy with it, please share when you're ready.I've also been tinkering with having short rests, medium rests, and long rests. Short would be more 4E style: 5-10 minutes; medium would be similar to the current 1-hour 5E shorts; long would be as currently defined. I'm still working on sketching it out and defining the differences.
If I did something like you suggest, I would probably go to a grittier rest system as well. But, personally, I favor a grittier system so that would work for me.