I agree.
Also Add the ability to place single item nebula's and such.
When trying to make a map look a specific way placing nebula's makes them a random size and shape and it is impossible to make then fit to a specific shape the designer has in mind. Perhaps just hold down control or alt to make a nebula place one.
Also add the ability to place ships directly on a map, not just anomalies that reward a specific ship. Also detailed info for what the anomalies do as well. Example "one wormhole to many" what does this give? a survey ship, Wow it would have been nice to know that ahead of time.
Or at least add a check box or something so that it can be set to not be protected by bandits.
And add more detailed tool-tips for certain selections. Planetary traits comes to mind. I had to make a fake map with multiple planets and all of them with a different trait so that I could start a game and write down the observed bonus from a trait. For example: Trait = Ghost : +50% research <--- it should tell us this.
Also with the planet customization option the list should be split so that natural resources (crystals and such) are separate than the buildings (factory, xeno farm) the player can build.