Incursion's need them, even when you are the target, It's quite fun dicing with danger seeing if you can survive or move when you know the attack is imminent.
I remember a few rounds back, Spayed, Cammy and Wiley trying to coordinate an attack on me in incursion..... I decided to leg it out of there that time
I've had a mini incursion war with Nighty...which I lost badly many rounds ago.
The only downside is the little power hiters that just pop your powers... now that nebs are useless for online play thats will be even more of a pain!