Majoru Oakheart
Adventurer
There are a couple of themes in this thread that, I admit, press my buttons! The first is the old Stormwind Fallacy; the fallacious assertion that anyone who likes/is good at character optimisation in a mechanical/rules sense cannot be good at/like the role-playing aspect of the game. That any attempt at 'min-maxing' somehow demonstrates that they aren't a 'real' role-player. That any attempt at multi-classing/using feats, since they can be used to optimise a PC, that simply using these rules demonstrates that you aren't a 'real' role-player and therefore 'must' by using those rules for selfish, powergaming motives.
I'll say the same thing I said last time this was brought up. Although being able to min/max or even enjoying min-maxing doesn't mean you can't roleplay(I can do both). I can tell you that each choice you make when building a character means you are almost always sacrificing one for the other. Which means that the urge to mix-max almost always means sacrificing roleplaying.
For instance, if you are choosing between feats and one says "People like you. The DM should roleplay that people like you more than other people." and another says "You are good at fighting. You get +5 to hit", one is much more flavorful. You are a PC, ALL PCs are good at fighting. That's the way the game works. Everyone is going to roleplay their character as someone who is good at fighting whether they take the feat or not. Taking that feat isn't going to add to any roleplaying situations at all. It just makes your numbers bigger. But since the first feat is entirely a roleplaying feat whose benefit is nebulous because it relies on the DM properly roleplaying it, anyone who wants to min-max will never take it.
The game forces you to make choices between those kind of things all the time. Not quite as extreme as that choice, but you WILL have to make a choice between roleplaying and min-maxing on a regular basis. And how often you choose one over the other will affect the game.
But I can tell you that so far no one has multiclassed for roleplaying purposes in any of the games I play in.