most Hannah Barbara shows are fucking unwatchable. Unfortunately that goes with Scooby Doo too. I mean I still love the villians, but the show is fucking godawful.
Space Kook was my favorite bad guy.
Anyways The 13 Ghosts of Scooby Doo is somewhat watchable, but that's just because of Vinny Price (also in that show they capture i think 15 ghosts and even though they do that there is no conclusive finish to the season/ series)