Handplane looks like a godsend. Simple, easy to use, and freeware... I'm gonna give it a try for my intended use (Gen-6 pokémon models), and if it works, I'll make sure to say something.
Edit: Hmmm... doesn't seem to want to work well with the Electabuzz map I'm trying it with.
Edit: Hmmm... doesn't seem to want to work well with the Electabuzz map I'm trying it with.