I think this sounds like a good idea. From my perspective, because I just like to make town and village maps, trying new ideas and things. But I could just leave them as "blanks" or with a simple description of what kind of structures I had in my head when I made them. (I was reading about the Roman Barbegal Mill the other day and can already imagine a small settlement around that kind of "factory").
It'd be nice to dump these kind of fickle maps I make somewhere that I'll never use, so that someone else might be able to get some use out of them.