Option to select rough position on the galaxy e.g.: Do not put me on the edge of the Galaxy, or in the middle of it, or right next to another CIV
I made a mod to regenerate better random galaxies with specifications like that, but it's hard to get right. It's essentially scripted image maps (stars go here and not there is what you can do pretty much), and then you have to fix the number of habitable planets etc. for map sizes and whatnot. I made it work for my large maps since that is the right size for my current comp, but the other sizes would need a lot of testing.
Option in the game menu to regenerate map right of the bat
This. Give me this! 