There aren't really a lot of jamjar-ish memes, though, and only a handful of them ever get any significant action. It seems like the vast majority of non-TFLN memes are either shipping/smut focused or the kind of gen that would work best with a little assumed CR or shared background (even if it's as simple as "both of these characters are university students.") When there are 100 characters on a meme I'm probably not going to check each journal for character info that may or may not be there.

I'd kinda like to see a crosscanon-specific version of the random scenario meme or AU meme where you have to put a 1-2 sentence description of your character in the top level.