billd91
Not your screen monkey (he/him)
This is like saying that the failing of AD&D is that it lost an adequate sense of realism.
Gygax, in the introduction to his DMG (p 9), explains that he is not setting out to achieve realism, and this point is reiterated at other places in the game (eg hit point rules, saving throw rules, XP rules, etc). For those who prefer the sort of "realism" that Gygax eschewed, there was Runequest, Chivalry & Sorcery and (not very many years later) Rolemaster. But Gygax didn't lose it - he never had it.
4e doesn't set out to present mechanics for simulating the processes of a fantasy world. It takes for granted that the GM and players can write backstory for such a world without using mechanics. It presents mechanics for resolving player action declarations. It is, in that respect, very close to Gygax's approach with 1 minute rounds and saving throws, and quite a way away from weapon vs armour tables, or 3E's replacement of AD&D saving throws with Fort, Ref and Will. It hasn't lost anything, though, any more than Gygax had - it never set out to achieve it!
You're going to have to accept that I don't see it that way at all. 4e, to me, represented an imbalanced approach to role playing gaming - emphasizing the game play aspects of it to a extreme that had not been present in D&D before.