I don't see what's wrong with having characters starting the heroism at level three. It's much easier for the DM to say, "We're going to start at a higher level" than it is for the DM to say, "We're going to start with half HP."
As someone else said, I don't see how one is harder then the other.
But I think it's a serious design flaw from the point of teachability to have the game start at a 1st level that will provide an unsatisfying play experience. Because every new player is going to begin at level 1. It's a natural and default starting point - if you weren't meant to start there, why would it be labelled "first"?
if we will ever see an official version of D&D where beginning characters are actually vulnerable in a fight again?
This is a red herring in my view. 4e PCs are highly vulnerable in fights at low levels - it's just that it will take multiple blows to drop them from full to zero hp. (Thereby reducing the Russian roulette factor.)
some players apparently don't feel fulfilled unless they are given a bunch of powers they feel they are entitled to from the get go.
Correct. When I sit down to play chess I don't feel fulfilled unless all the pieces are there (if I want to forfeit a piece, that's my choice).
When I sit down to play 500 or bridge, I don't feel fulfilled unless I'm dealt a complete hand.
Of course, whether I play chess well or poorly is independent of starting with all the pieces. And I've played cards with people who would barely know what to bid even if they picked up a single-suit, Ace-high hand.
But, as I said upthread and as others are saying, it's about having the necessary components of a PC to actually play the game as advertised!
Archetypes exist for a reason. When I choose to play a warrior type I'm saying I want to engage in meaningful combat encounters where my decisions have a direct bearing on the party's success. If an encounter is reduced to Russian Roulette where matters like target selection, choosing to stay back and ready an action to attack anything that comes near the wizard, etc. have no effect I'm not playing the game I signed up. When my rogue has no meaningful ability to sneak about or unlock traps I'm not playing a rogue. If the careful application of spells isn't meaningful than I'm not playing a wizard.
This is a big issue in B/X and AD&D. The Basic rulebook talks about Hercules and Merlin, but it is impossible to play such a character using those rules. Hercules cannot be one-shotted by a kobold, and Merlin is not a snivelling weakling who can cast a single (randomly determined) spell.
The foreword to the game even has a narrative about rescuing a princess by killing a fire-breathing dragon tyrant with a single swing of an enchanted sword - a feat that it is impossible to replicate using the game mechanics, given max damage would be 16 (10 for 2h sword +3 for enchantment +3 for STR) and no fire breathing dragon tyrant in the game is going to have so few hit points (I think red dragons in basic have 9 HD).
I'm condemning people for using this as a reason for refusing the allowance of lower-powered modes of play that used to be the norm at low levels in previous iterations of the game.
I'm happy to be frank about this: in my experience, 1st level play in B/X D&D and 1st ed AD&D sucks. The game expects you to fight (there are fights within the first couple of rooms in the examples of play in both sets of rulebooks, and most of the rules are about fighting) but you don't have enough hit points to confidently have your PC enter a fight. A wizard has almost no magic. And a thief's success chance for special abilities is crap (AD&D is a bit better here with DEX and racial bonuses). In AD&D (but not B/X) a 1st level fighter also has the worst saves of any character.
Just making it to second level doubles your hit points. Making it to 3rd level gets fighter (in AD&D, at least) onto a better attack chart and a better saving throw chart.
The one time I really enjoyed a 1st level AD&D PC was in 2nd ed. But that PC was an uber-cleric built using the broken rules from Skills and Powers. So although I was technically 1st level, in functional terms I was probably closer to 3rd in all respects but hp (eg I had access to Evocation spells while using a cleric's spell table, including bonus spells for WIS; and the +/-2 to stat rules ensured that my relevant WIS score was 18).
I would strongly encourage the designers to avoid building a game which will repicate classic 1st level D&d play as the default.
It's also conflating Characters and Players. I am a fat nerd sitting at a table rolling dice and eating Cheesy-Poofs. Bruno the Warrior is an imaginary character being put into motion by said overweight nerd - his choices driven for the sake of entertainment and constrained by all manner of meta-level concerns and mechanics. Bruno is an imaginary engine to pretend at heroism. At best he's the Lone Ranger a character in a story. He doesn't really earn anything - it's a contrivance. I'm a gamer rolling dice - I certainly didn't earn any status on my end either.
<snip>
Simulating an arc of dirt-grubbing peasant to competent warrior in our little game of imaginary men and plastic polyhedrons is all well and good. It's for amusement purposes only, after all.
Nicely put.