Yeah having functionally unlimited single player endgame in FH3 was awesome. Then they took it out of the franchise for no reason that I can deduce other than trying to promote playlist and multiplayer engagement in FH4, and then they doubled down in 5.
Vote here if you’re interested: I want custom championships back
I also made my own suggestion which would function basically the same: Horizon Custom Tour
Maybe with single player endgame re-established, AI will actually get attention.