You know what comes to mind? Think about... what's the name... damn, it's that guy that draws those fat people and those cats but he mentions science-ish things sometimes in his cartoons... oh, the oatmeal. He's wildly popular and though his writing isn't my style I can see why people like the stuff. Can't you assemble some sort of stem super team to make original art and videos and other content? You also need creative writers, not just technical science writers.

They're fully shilled-out now, but there are lots of science channels on youtube, for example, that do quite well, and they're all a lot less technical and more visual but at least attempt to confer some knowledge to the viewer. Think kurzegeishtichgecl or whatever, as terrible that channel is at misinterpreting data or misrepresenting facts, the guy with the accent and the animated birds really does draw a crowd.