[quote=Primal Conundrum]a lot of people RP that stuff quite poorly.
[/quote]

Yep.

That's the biggest problem with allowing total player creativity. It's an open door to shoehorners who want to play the same thing regardless of setting whether that be vampire, werewolf, pokemon or gelatinous cube. Depriving them of the vampire/werewolf option by submitting both as an unplayable monster race is an admittedly devious preemptive strike on my part.