Hi
I am just looking into developing something which requires "groups" of tile maps. In that, the levels are pieced together given a larger set of tiles. Rather than individual tiles.
There is a few ways I can think of doing this. Each "tile-group" is a separate tile-map (but I am worried about speed?). You can then drag and drop the pre-fabs into the scene, each a separate tile-map-group.
I can write extensions to the tools. To maybe "apply" one tile-set to a larger tile-set. Although this seems a bit more difficult.
My eventual aim is to be able to (in-game) drag and drop these tilemaps together.
Alternatively.... I can not use tilemaps and develop my own out-of-the-box for this but I quite like the additional features I have with the tilemaps.