This is really cool, makes me nostalgic for a lot of time georeferencing random maps from the library of congress or from municipal archives etc.
In that same vein, you could add a feature where users could contribute georeferenced map files for community review and approval--I think that would really increase your scalability. I see you have an email for that currently.
I love love love this direction. And yea, I have a basic email but I really think a super simple upload and maybe even dead-easy georeference tool for folks to contribute data is a no-brainer! I'm bumping this up on my backlog, thank you!
