Still working on it, but suffice to say it's causing no end of rage and aneurysms. Ability to do it isn't the problem, trust me.
Many thanks to ~Captain-Nintendork
consolidation of the dimensions of Hyrule, Termina, Labrynna and Holodrum. (This works because in chat we roll with them being neighboring countries to allow larger adventures and ranges of characters. Yes, WE KNOW IT'S NOT CANON, so please don't start.)
And many more thanks to ~StarRaven
for making her [link]
map brushes available.