As the title says. I'm not talking about the core rules as I am going with the assumption that the D&DN PHB will have 14 classes- the 11 3.5 ones, Warlords, Warlock and Assassin.
Anyhow how many classes do you feel D&D really needs and what type of classes do you think are stupid?
Classes we do not need IMHO.
An assassin would be one example although complaining about that one is pointless. I would include the Samurai as well (its a fighter) and Ninja (its a Rogue or fighter/Rogue) and Gladiator. 2nd ed got these ones right with kits IMHO. From 3.5 I would add the scout (Fighter/Ranger or Ranger/Rogue works) and Knight as well. Some of these classes are great as class varients that can be offered in splat books (PHB2, Complete Fighter Handbook, Complete Arcane, Martial Power, Advanced Players Guide type books).
A bit harder to define. The Mystic from 2nd ed, the 3.5 Dragon Shaman, Seeker from 4th ed. Not a massive fan of the Gunslinger in PF either (fighter with guns works, nope design a class for it). Often the name alone is silly odds are PCs almost never choose these classes or even know they exist (or care). I offer a virtual cookie to anyone who knows what 2nd ed book the mystic came from. Apologies to anyone else who likes these classes, just not my thing. Don't care to much if they turn up somewhere though. Doesn't float my boat, may float yours.
Classes that Are Obsoleted By Other Classes.
3.5 Samurai, Swashbuckler and Healer come to mind here. 4th ed offered the Runepriest which probably should have been a cleric varient.
Classes I Do like.
Gish type classes seem popular (Duskblade, Swordmage, Magus) although some can be covered by multiclassing they do offer stuff that Fighter/Wizards do not. I liked the Beguiler in 3.5 as well. I also liked classe that have been designed specifically for a setting such as the Gladiator in 2nd eds Darksun, Artificer in 3.5 Eberron, and Swordmage in 4th ed FR. As long as that class makes sense for the setting anyway. I also like Specialty Priests in 2nd ed espicially the ones in Faiths and Avatars, Powers and Pantheons and Demi Human Deities. New classes should be interesting and do something that is not easily covered by a varient of another class. New classes are kewl but we don't need 8 of them per year. IIRC 3.5 ended up with around 60 classes, IDK how many 4th ed has.