At least your character has a trait. Also I haven't fought many bane players but with the way his trait works I think his health and damage nerf on cool down is justified.
I find that for the most part opponents don't watch my trait status, so it's too easy as Bane to just crouch or command throw and wait out the debuff without my opponents putting any pressure on at all.
I think Bane needs his to stay through end of rounds and clashes. But Doomsday's does not. DD could body someone with his trait to end the round and automatically be able to use the trait again to get a good chunk of health off the opponent at the start of round 2. It makes him unstoppable.
And since we're discussing trait buffs...
BE THANKFUL YOUR CHARACTERS ACTUALLY HAVE A TRAIT THAT ISN'T TOTAL SHIT. Joker's parry is useless.