this point in the game is a huge gap, when the empires have all been stable for a little while, your research is maxed out, your ship limit reached and all your planets are as strong and as upgraded as possible. all of your options are really cut and all thats left to do is to decide how to attack (and what to cut in the process).
now, attacking is fine, but it takes a while. so I'm here to brainstorm what we can do for the mid and late game time, when nothing is really "going on". I, besides saying: increase ship limit, make ai more agressive, make more upgrades for planets possible and more research, which is all uselessly ambiguous... am stumped.