I've played a couple games of Entrenchment so far, and am having a good time. Yes, mines are overpowered, and yes starbases need to be beefed up a bit. But one issue I've not seen mentioned yet: the interface around starbases could be better.
Specifically: As it stands, when I build a starbase with factories, I have to select the starbase when I wish to actually use the factories. Usually I first have to find the planet, the starbase is around and _then_ find the starbase itself. And if I've got a second factory in orbit, I have to select that separately either as the factory, or around the planet.
Same thing with squads of strike craft. I can’t queue up the squads until after the corresponding starbase module is completed. Additionally, I’ve got to build the squads from—again—within the starbase.
It would be must simpler if starbase improvements were handled the way all similar orbital structures were handled. The UI for building units and managing squads is one of the foundational strengths of the game. Bringing the starbases in line with that UI would add a lot of strength.