Um, assuming this isn't a troll. . .
No way, no way in Baator.
The old AD&D 1e/2e framework worked for a decade or two ago, but it had shown it's age and obsolesence by the time it was replaced by d20. AD&D clearly showed that it was built from the framework of a wargame, and it had piles of bolted-on, inconsistent rules that made learning D&D utterly daunting to the newbie, and confusing even to experienced players.
d20/3e, in either it's 3.0 or 3.5 version retains all the signature features and flavor of D&D and makes it highly adaptable to any imaginable setting, while getting rid of the dumbest, most contradictory and arbitrary restrictions. Like why are elves so magical and tied to nature, but they can't be as high-level wizards or druids as humans, or why must all Clerics have their combat ethics defined by the medieval catholic church and eschew all edged weapons, why are or any one of countless other "Because Gygax/TSR Said So" arbitrary rules, the contradictory/confusing Saving Throws and THAC0/AC rules of earlier. Not to mention the disasters of 1e/2e's multiclassing/dual-classing rules, 2e psionics, and the horribly bare-bones way of statting monsters.
I can only wonder how incredible Spelljammer, Dark Sun, and Planescape (as 3 of the most innovative 2e settings) would have been if they'd been originally written in d20/3e, and had it's flexibility to work with from the beginning.
If 4e is a return to the "old" 1e/2e I think it'll be the gaming equivalent of New Coke (especially since those retro-style gamers are happily serviced via HackMaster). Frankly, I don't have any real plans to buy 4e when it comes out, I'm happy with my own home-brew blend of 3.0, 3.5, AU, UA & d20M, and if I have to, I can even distribute it via the OGL and keep 3.x alive long after WotC discontinued it.
