I keep hearing about ZeroK and Beyond All-Reason. What are the major differences between the two and how do these compare with Sup Com FAF, TA and such?

What about The Infectious Madness of Doctor Dekker?

I’ve never played it, but perhaps Mask of the Rose?

It’s closed source, but Symfonium has had smart playlists for a while, if it’s a feature you’re willing to switch for. It’s great to see this feature in the Jellyfin server, and hopefully all the apps can implement it in due time.