Ya know, I think all of these arguments on grid filler classes have really changed my mind.
While we're at it, there's too much fluff in 5e too:
Barbarian? That's just an angry fighter.
Bard? Just a Cha rogue (maybe multiclassing wizard).
Cleric can stay (though we could just make this a wizard that thinks their power comes from the heavens)
Druid? Clearly a nature cleric! I mean, there's already a nature cleric in the darn PHB! This class might be the worst offender of all!!!
Fighter can stay
Paladin? Just a fighter with cleric levels (though if we go the route of making clerics wizards, they'd be wizard levels, obviously)
Ranger? Just a fighter with nature cleric levels
Rogue can arguably stay, though there's a fair argument for just making a stealthy fighter instead
Sorcerer? Obviously just a wizard with fluff.
Warlock? Same as sorcerer
Wizard can stay
There we go. Stripped of all the filler fluff, the game is clearly better off using only the fighter and wizard classes. (I guess we can include the rogue and cleric if you really can't live without filler fluff, I guess.)