I’ve wondered about this for a long time. Why isn’t there more merch for the Cartoon Network? Expansive. All encompassing. Dexter, Johnny Bravo, and the Power Puff Girls standing side by side with Bugs Bunny, Tom and Jerry, and Underdog. The only thing I come up with is that CN isn’t that relevant anymore, thus no real demand. Or that the rights are convoluted and complex.
As to a more superheroic approach using classic HB characters, that could be a lot of fun, if there’s any demand, like…
Johnny Quest
Frankenstein Jr.
Impossibles
Space Ghost
Dino Boy
Birdman
Galaxy Trio
Herculoids
Mighty Mightorr
Samson and Goliath
Sealab
Jana of the Jungle
Plus all associated characters. And I’m sure I missed a few. Same scale and style. Add in Thundarr for that Kirby flavor.