To help with understanding and planning planetary improvements, I have some requests:

1. Show us the per-level bonus an improvement can get on the tooltip (or as a sub-tooltip). Some have strong bonuses, some have weak, and some have non-existent; but the only way to find out is to build it (or hover it over a valid build spot).

2. Let us get a breakdown somewhere of what is improving the level of an improvement. This isn't as big a concern, but I think it would still be helpful. I was completely baffled for so long why a colony center was a level higher than I expected; I finally guessed that it was built on a grassland, but could not find any indication in-game.

3. A clear[er] description saying something can only be built on the homeworld, or only can be built elsewhere. The latter is usually mentioned in the description, but there were a couple of times I didn't notice it at first. The former seemed to apply to the Xeno Anthropology Center, but I didn't see that anywhere.