First of all I am looking forward to this crossover, but why have Terminus and Starro as villans. Both are pretty much lame villan. Terminus is techneclly a Fantastic Four villan. Why not have big villan up against the teams of a combo of two villans. Or have the first villan the teams fought.
JLA VS Loki and Graviton/ultron pick
Avengers vs Derpero and Darkseid/Doomsday
This combo would be great challenge.
Also It is only 4 issues and 48 pages each thats only 192 pages it should be longer or it has to be great.

The JLA/Avengers team ability can only be used for mov....

Hey, you're not asking *that* question.....