@Mauser:
I have had a close look at the tilesets discussion. I will read the thread more carefully and then give my feedback
Yes big maps should work fine with the Map Editor. The only "problem" so far are the old grid numbers in the NPC script. But we have a solution for this. Bugmonster has a NPC Editor which can convert the grid numbers from "normal" maps to "big" maps.
Indeed, the tilesets code needs to be altered to have a more flexible use togther with big maps.