I think it's time to change the reward system for RAs. In this case not completing before timer expires. Right now if you fail to kill everything before the timer hits 0 you get no reward at all. So it's all that time wasted for nothing. How about a minor reward for at least participating... say 1/2 or 1/4 reward for putting the effort or maybe base it off the percentage killed.
Right now it feels really crappy to waste 10 minutes in a RA killing Tholians and getting absolutely nothing out of it because there's a couple ships left alive on the other side of the map.