When having a planet selected on the MAiN screen, mousover the "rush production" button shows the required cost - good.
When waiting for a turn to finish with the mouse there, the cost indicated does not update when the turn completes; I have to wiggle the mouse for that.
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I always forget to launch my just-produced colony ships.. Not much of an issue, but the game is otherwise good at reminding me of things I could forget, so this sticks out.
Maybe you could give ships in orbit the same sentry/defend/idle state as ships in transit.
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[edit]
When queing / rushing a starport, it would be nice if one could already queue ships as well. Right now I have to go back to the planet after the completing turn
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[edit2]
The starbase module unlocked by "Railguns" has an poverlong title that fits nowhere - maybe comment and title got swapped. (It stats with "Why though [sic] stones at your ene...")