I'm also solidly in the camp of "fewer, but more flexible" classes in D&D. Yes, I believe you can roll most of the abilities the Fighter, Barbarian, Ranger and some of the Monk as Warrior-specific, talent-like feats. Prestige classes can incorporate things like Rage (Berserker), Ranger spellcasting, esoteric Monk abilities (X Art Master), Paladins, etc. Have 4 primary, but highly customizable classes, and everything else goes to PrCs. At the same time however I'm not big on "classless" systems.... I think the essential class structure should remain intact.
Cheers,
A'koss.