One of the things that keeps getting on my nerves is when I click the 'upgrade starbase' or 'idle colony' buttons and then have absolutely no idea where I am in the universe. I regularly use the button, then immediately exit the screen so I can check where I am.
Both of these screens have vast amounts of unused space. I honestly don't need to have 90% of my screen populated with a picture of a starbase. A small (or even openable) zoomable minimap within these screens would let me check my rough position within the empire and so save me ten seconds of mucking about. Please can we have one?