The whole Route on one map. The transitions are done by an Essentials Script. I thought it would be useful to have routes/towns as units, as it's done by the original game this way. (I clearly remember the change of color/music whenever I visited a seperated place.)
Doesn't that sound promising?
I have the tiles (as far as now, I only missed one grass tile, but nobody would notice) and the maps until pewter city plus mount moon minus events/teleports done some years prior. Just checked them, still works well. Wanna combine forces?