Bug: In the mission board the ship's side had no scroll bar when I bought the first upgrade and accepted 4 missions.
Bug or missing feature: The "Eject Crew" in the Crew Roster does nothing, so effectively one can't dismiss a crew member...
Visuals: The event popup between the turns should be adjusted against the optical illusion that it looks like the top edge is larger than the bottom edge...
Since one can't set course on top of a tile occupied by a planet (or other object like the star), it might be a nice if clicking the object opened a description with some details about it.
Also, what is that thing you start the game at?