for example commanders buildmenu:



It makes no sense for the T1 labs to be at top, then comes some water stuff, then come the T2 labs.
there are holes are because i was too lazy to see what is on the other sides. But I think they would not be so bad, maybe its possible to add a "empty unit" in there? Or some other less hackish way

Main idea is, factories should be grouped, as should eco stuff or defense.
Even better, if there is no water on the map, remove the water buildings from the buildmenu!
