Just a few thoughts after my first play through of Galactic Civ III.
- While the rotate button in ship design is "middle button" I would find it a lot easier using the right button. Unless you plan to use that for something else. Perhaps have the option to change it in preferences.
- Also in ship design, the placement can be very tricky. Not really sure how you would make it better, but at the moment its finicky and difficult to place things exactly where you want them.
- On the galaxy world map, make it so that you can move the map by dragging your mouse to the edge of the screen. Most of the time I am using the mouse and it's annoying that I have to then take my hand off that to move the screen using the arrow keys.
- Make it clear which improvements can be built where on the worlds. I was confused as to why it wasn't letting me build some buildings. Figure it must of been because - for possible example - a research building cannot be built on arid tiles. Perhaps when you click on a tile to build something, grey out the buildings that cannot be built there and then if they can after some research, have that tech needed pop up when you hover your mouse over the greyed out building.
- In the research screen, again have it so that when you hover your mouse over an unlock that research will give you, get something to pop up so that you can see and compare the different options thoroughly.
I am sure I will have many more thoughts. 
Will add them as I find them.
