Bitmagnet -https://bitmagnet.io/ - does exactly that. I left it running for a few weeks and then stopped the crawler. Didn't expect much, but still somewhat disappointed by the garbage it reeled in.
I've had one running for over a year now, it's replaced my usage of regular torrent sites completely, there is a lot of junk, and it gets stale, but it's still a better experience than most of the public trackers out there IMO
This is a good tip, thanks. I'll probably replace my home-grown scanner for this one.
probably worth adding some ML filter to it because yeah, most of the bulky stuff in bittorrent is always going to be garbage - a lot like the internet generally, the value is in filtering the good stuff out