Mirages ultimate is all but useless. The "invisibility" part can be useful but the decoys have no use whatsoever. I think the decoys start running in different directions.
Wraiths "invisibility" is possibly the most useless and actually self hindering ability in the game. Using it against anyone that's paying attention or even seen wraith before is pretty much pointless. Her "invisibility" like wraiths isn't truely invisible you can see her plain as day because she's a glowing blue cloud. I wouldn't mind this so much if wraith got a speed boost or something while invisible but right now it's just a few delay to your death because people can easily keep up and just wait for you to appear. The largest hindrance is while invisible wraith can not see anyone else except other invisibles. So everyone can see wraith but wraith can't see anyone so you have no idea if you're popping up in the middle of a squad.
If people can see an invisible wraith then she should atleast be able to see them. A slight speed boost would be nice for it or just leave the ability as isbut make her truely invisible.
