Imaro
Legend
I'm not suggesting other designs, even other editions of D&D in the future could not serve those goals better- but the previous editions of D&D certainly do not do so, that's just one of the rationalisations people make for hating 4e.
There are any number of games that take a fair crack at putting roleplaying and story concetps into a space with more mechanics support. I don't agree that they all work, but they at least have a valid argument to make in favour of them trying.
The previous editions of D&D did nothing of the sort, and 4e is certainly better than them in that respect, due to the quality of it's DM advice about story, campaign, play styles, ect.
You know, after going back and re-reading the 3.5 DMG 1 & 2 along with the PHB 1 & 2 and Unearthed Arcana for 3.5... I'm going to call bull on this... There's tons of advice on roleplaying, story concepts, structuring campaigns, DM'ing styles, player traits, backgrounds, etc. In fact I'd even argue that 3.5 also (whether you like the implementation or not) provided more rules suppport for implementing alot of this stuff in your game. So no, I don't think 4e was a better edition at touching on this than 3.5 was... the only thing I might give 4e is that it was touched on in more depth earlier in the edition lifecycle... and even then I'm not so sure it's as in depth as what we got out of those five books above for 3.5.