[Suggestion] To show detailed tile bonuses (maybe optional)

Looks great

Yes - similar to this

It's bothersome to have to select a tile, just to find out what the basic bonuses are. Also the symbols don't match the bonuses - use the same symbol/bonus combinations as in gc2 maybe?

Lets not fall into habits, I love the fact there are multiple and divergent bonuses for specials on tiles, comfort zones are nice but I want  a new experience, not a graphically updated GC2 clone.

I do agree that a better way to get a tile overview is in order, maybe with a mouse-over on the symbol to quickly summarize the benefits provided by the special on that tile.

That would let you quickly plan your build outs without requiring clicking every tile one at a time.

Good idea with the tile hover

But maybe add an option to show the bonuses of all tiles simultanously, so you get a nice overview (I want to cluster my stuff in the best way possible)

Yes perhaps a clickable option on the planet screen to toggle showing full tile bonuses, I would hate them to always be there, I prefer a clean look to the screen, the graphics look nicer this time around and would hate a bunch of floating text breaking the view.

My suggestion would be a key toggle, then. Set it so holding Shift lights up all the bonuses, but they disappear when you let go. Or just a hotkey toggle, push once to turn on and once to turn off.