User blog comment:James12708/Yahg in multiplayer?/@comment-1786741-20120509221526/@comment-3228423-20120509223125

Well considering that the yahg are next on the chopping block if this cycle would end, they would go and help to destroy the Reapers before its their turn.

Besides, yahg wouldn't be that overpowered. Just take away their ability to perform an evasive maneuver and even the ability to take cover and they're good to go.