I mean, it could happen through overlapping contests and sharing materials. Write a poem, use the poem as an inspiration for a piece of visual art, get someone to review the art. I figure that way artists get more eyeballs and you're being incentivized to explore topics you usually don't.

Alternatively, or additionally I guess, someone could write a little recap of what has been going on across different communities. Contest winners, interesting stuff, you name it. Hell, maybe you could make a contest out of that, too. That way Kitty could get some sleep and users invest into the larger network. Potentially with a pathway to them modding themselves, if the idea pans out.

Just spitballing.