I was tempted to rate only 4 stars for balance on this game, because at times things got a bit slow where I felt like I just needed to wait and wait for key upgrades.
But that'd be unfair because the scope of this game is quite ambitious. With all the complex systems, sending resources between planets, assigning citizen bonuses to different resource sectors, etc., I can't expect the same fine tuning as a simpler game.
Really neat game, normally I have lower expectations for games created in jams, due to the deadlines, but this game is outstanding by a non-gamejam standard. Great work!