Something I think could be helpful in the Void stage, it would be nice to be able to see how many of each structure you have on the map and where they are. I'm one of those kinds of people who needs to have everything even and equal and on the same level (same reason I've never been able to finish a Pokemon game), so it would be helpful to find each of the structure types on the map, and/or show on the purchase menu how many of each structure you've purchased.
*Edit: Oh, never mind about listing how many you have! I scrolled down on the menu and it does show the count for each structure! Now I just need to figure out how I miscounted on my own end.*