If you have a larger civ, managing it can be a chore. The Civ Manager is great but once you have 50+ plus planets spread out all over the place it becomes less useful. Especially when building ships. Until you late in the game where you the ship is built matters quite a bit. When you are preparing for war, you want the planets closest to your target to generating most of the attack force.

We could use the mini-map to draw regions and have the a Region Manager just for specific region that would make management much easier. While I could see just acting as a filter for the Colonies and Governors screens, I'm sure there are other areas where it would be useful.