I think the galexy editor is great and all but I would really like to see alot added to it. In other games I played(WC3) There was many things you could do that I would love to see in this games map editor.
-Object Editor: This tool allows you to edit all the ship/module's/planets/ability's/and buff's right in game in a nice user freindly interface instead of having to sift through your files and find the file in a long list of 896 files then having to search the file and change the data risking screwing something up and your mod not working and haivng to look through a tun of data to fix the problem.
-Unit placer: Acually allow us decide where to place units at a planet to create interesting scenerios.(this may be possible but If t is i dont think it is easy to do)
-Sound Editor: A tool that will allow us to place certain music to play at certain times or certain places
-Trigger Editor: A tool allowing the dumber modders to still make good maps with some prebuilt triggers
-3d Map: This will allow players to place star systems where they want them on the Z axis (This may also already be possible im again i havent found a way to do it yet).
These Change's would make this already great game MUCH better and add even more replayability to the game...IMO.