Personal opinion, but also a question. I searched the boards, didn't see it mentioned so if it has been mentioned, I apologise.
Necromancer, some skills are illegal and will bring the guards down on you.
Stage 4 Vampire... I can walk right through town and no-one bats an eyelid (stage 1 and 2 are arguably unnoticeable/easily hidden... ish).
Werewolf, I can transform not only in sight of all the townsfolk, but standing right next to a guard... he doesn't even glance my way.
Even though it might inconvenience me, shouldn't those be illegal too? I mean, it is a mmoRPG after all. Shouldn't it matter at least a little?
Personally I think it might add a little spice. All 3 are a character choice, as is stealing anything you can get your hands on in town/from pockets. That gets you noticed as well.