Submit a battle franchise!
So, doing Bluey and Toy Story in a row, not following far behind from Rubbadubbers and Thomas the Tank Engine, (all great franchise additions mind you) probably isn't doing us much favors for the teen demographic, so we're going to get edgy, but not too edgy. This should be a somewhat serious battle franchise - a shonen anime or superhero kind of deal. I'll allow something like Dragon Ball or Batman, and may extend to stuff aimed at a slightly younger demographic like Sonic or (the most popular iterations of) TMNT are, or franchises that are a bit more mature but keep in the same sort of tone like Scott Pilgrim.