Seriously, though, one thing pretty weird I wouldn't mind seeing would be a PG-13 Scooby-Doo film cut from the same cloth as "Ghostbusters" and "Gremlins", in which the funny parts are truly funny and the scary parts are truly scary, and Scooby speaks in his familiar grunts and yelps and sounds that might sound A BIT like words but doesn't actually talk, at least in full sentences, anyway. WB/HB has enough animated stuff for the kids, they may as well aim a little older. I wouldn't be averse to it being set in the early '70s, either.
For that matter, I'd also have no problem with a live-action H-Bverse which starts in a world in which the more 'straight' characters like Jonny Quest, Space Ghost, etc. exist, but as the result of time-travel shenanigans in one of the movies, there comes to be an alternate/parallel world in which evolution has been so affected by whatever happened that dinosaurs coexist with literate humans (hence, the Flintstones) and which ultimately evolves into a world populated by talking animals as well as humans (Yogi, Snagglepuss, Jabberjaw, etc.). I can't help it, I've been on a POTA binge the last couple days.