If you check the cover again... All the kids are floating on the train station, so no need for shoes
I didn't knew ANAD was gonna continue after CW II, I thought it was gonna turn into adjectiveless avengers, and the teen would join Champions
Apparently they went through the work of settling a rights lawsuit with another company that also used the word Champions for their comics and toys. So they must be really committed to make champions a thing
If they make a cartoon spinoff I don't think they'll use the same lineup, Viv and young Cyclops would be complicated to add so they might get crossed, there are more teen heroes around in the animated MU that can compose the team.
Also kamala, Miles, Amadeus and Sam are around so they have 66% of the lineup. I hardly think they'll consider adding a mutant, they only added cyclops because Waid likes him