[bizzum]

Locking the ability for people to play the characters they want is not good for anything.

Oh, I accidentally logged in the wrong 46+, looks like I'm stuck on it for 5 hours.

Need an extra cleric for this raid or cleric left the group and I could replace him? Sorry, can't log on to my other characters until the repop is done.

Oh I'll buff our group with c2 my enchanter is camped at KC entrance. Oh, never mind.

Too many situations where this just interrupts the flow of gameplay. I understand your concern about people camping out multiple characters at multiple mobs, but I think its a lot more limited and small scale than you currently believe it to be. This is coming from somebody with more 60s than anybody should have (sigh).