First of all there should be "area mod" as third option for placing/deleting tiles accessing it via holding on button twice because dragging mode already exists in custom level builder but there is no information about it. I playing it for 2 years but I learned that from infinitode 2 reddit page though a month ago.

New maps shouldnt need names to just exist. If nothing is wrote in box then just "new map #number" or "new map (AA-AB-AC)" should be enough for a map that got sold for prestige

Already placed tiles shouldnt be visible on other custom maps. I am always so afraid to sell my oddly specific portals/bases to got sold for prestige tickets. A favorite category is too much to ask but still it is so easy to sell a tile by accident in this version

Newly created maps should be saved in real time but only once when player saved it manually by exiting. Because new maps usually got deleted when phone/Pc dies out (or simply go out of app) if it has not got saved before