You MUST MUST MUST re-think either the time limit on arena fights, or the ridiculous length of some of the un-interruptible arena ultimates.
Particularly Jasmine and Dokras' ultimates. If they are on both teams, you can almost guarantee a timeout because 1/2 the fight is them sitting there doing their animations. Either add 10-20 second to fights, or shave 30-40% off of the length of the animation for their ultimates. Now with Ezio being un-hittable for a large portion of fights, the problem will only get worse.
It makes the arena significantly less fun to have so many fights end with timeouts. Fix it please. Or at least re-evaluate it and make sure that this is really how you want it to function.