@Charby that would also be fun.
The biggest technical problem I see is that the location field in the account is just plain text, so no way of knowing what is in it. A more defined field would be needed.
I need some more hours in the day to investigate how much effort it would be.
@SGaist I could be missing something, but if we can run some JavaScript on the top of the old forum pages, this is a solved problem. or at least temporarily until we come with something better.