GUI Icon coloring - white=on; civ=off - confusing/backward; but it does stand out when they are on...avoid white and have a dulled out color for off and the civ color for on.
Starport description is wrong
Sticking the capital on Antartica; you should ensure at least a couple of adjacency slots for the homeworld
Not obvious that a tile is "mountain" (or other non-plains type) and thus improves wealth level. A grassland tile overlaying antiartica is unusual. Even if getting perfect graphics is difficult having border colors for the different terrain types would be nice.
Usable planet class = 12; 11 improvable tiles (star port and capital already in use + 9 others) - assuming related to future upgrades. Be nice if class was current and terra-forming activities increased the class along with adding the new tiles.
Population caps?
Changing production allocations (specifically production) does not reflect on the planet screen until you exit and come back in.
Likewise, the mouse-over on the current research does not update until you go back into the research screen.
Sensor Range would be a nice info item to add to ships; make optimum exploration paths easier to figure out. Or even add an outline on the grid to indicate visibility from the currently selected ship/fleet.
(Not confirmed) Projects accumulate apparent production (though never finishing) and then if you switch to another production the main screen colony production progress bar does not reset to the true production level of the current item.
Next to the treasury it would be nice to see income/turn as well.
It is not obvious how many points a ship is going to contribute to fleet logistics
