Interesting suggestions. All of them.
I'm fierily against the classic idea of the Taunt skill, though. In my experience, it always results in predictable (boring) combat scenarios, where tanks act like meat-shields and enemies get invariably stuck with them.
A good compromise, that gives tanks some crowd-control efficiency, but not too much crowd-control efficiency, are enemies that get a consistent malus while attacking characters different that the one that taunted them.

Last edited by Baudolino05; 09/09/15 05:28 PM.