In the last 15 sec we could have a countdown in the middle of the screen. So we would have 2 steps of alert, one is at 2 minutes which would red the screen edges and notice us to 2 minutes remaining, and one is a countdown from 15s so we don't forget to rse while we multitasking. (I think this is easy to implement, maybe it could be added as a setting to opt out from either of them.)
Also, it would be super cool, if we would not loose the whole fleet when timer runs down, but instead our transports would activate rse. (Maybe lowest arts first, but at that point randomly would be totally ok for me too, loosing 1-2 art vs loosing 9 ships is still better.)