In settings someplace, it would be so cool to have a set of defaults for how your ships are built, for example, if you want all your scouts to be made so that they autoexplore, there would be a checkbox for that, as vasari, if you wanted your scout ships to come out no autoexplore, but autoattack, and auto take resource collectors, you'd just set the tic boxes and voila.. same for cap ships, just all the options would be listed for all the ships, and you'd set how they default out of the chute.. also along these lines, you could set so that your carriers would automatically produce fighters or bombers by default so that if you have them set to auto rally right to the front lines they don't show up naked..
Speaking of carriers, since there is no fighter range, they should by default try to circle away from anything that might target and chase them.. I micro-managed this and my carriers lasted a very long time drawing fire and the ships circling to chase them while the strikecraft were free to attack the pursuers.
What is up with planet health? what does it represent? you've killed off all the population, why not just go colonize?
There should be a t1 device for individual planet propaganda so you would be able to fight back in the propaganda war if you happen to get taken by surprise by it

or maybe the bunkering system might assist with this, it really sucks to get bushwhacked by a colored line.. oh, and when 3 different colors are converging on your planet, is there a way to tell which is how strong?
ok, guess that is all I've thought of for now