The autogenerated genre playlists have this issue too. "House Music" is a very broad genre (or metagenre, given how many subgenres exist), so you'd think that they wouldn't end up being largely comprised of tracks I already have on my own playlist. And the rest end up being kind of bland and not really quite what I'm looking for.

I seem to remember that Spotify used to have a heavy focus on employee-operated playlists that curated new releases, though I didn't really take advantage of them at the time. The newer (cheaper) algorithm-driven ones don't really cut it.