[PLANETARY SCREEN UI]

Icon for the natural resources "mineral rich" and "precious metals" does not show up on planetary screen.
Text describing some of the natural resources does not fit in the upper right corner of the planetary screen

This is a minor complaint, but I think it just looks bad. On the planetary screen, the list of the planetary characteristics (to the right of the wealth square) crosses into the blue fuzzy border (namely the maintenance line). The same goes for the "M" in the manufacturing square to the left and the scroll list of the right panel containing the projects. I think that text, buttons and scroll lists should stay free of the blue fuzzy border.

No cost displayed for the shipyard

I think that the "wrench" is overused as a symbol. If symbols are to be used I think they should be unique for each category they represent. As of now, the wrench can stand for maintenance, abilities and a whole lot of other stuff.

No tooltip when hovering over the planetary special "capital

I don't know if its a bug or if its supposed to work that way. I can only build one colonial hospital. And when I research medical center the hospital upgrades to that structure. But once upgraded I can again build a colonial hospital (which cannot be upgraded). Is it supposed to be that way or should it be only one growth structure per planet? (but it gives me quite a nice growth rate )

Well that's it for now