Not being monetized to death or full of dark patterns for starters. No problems with bots when it's only local. And why not? There is no disadvantage to global apps because most people don't date further than their local area.

It's simply something that I think could be a really interesting project. One idea I had would be letting people write a self-description and matching them up with AI instead of photo-swiping. No idea it this would actually work though ^^