The thing that I didn't appreciate in CA: Civil War was Scott's willingness to join the team when he knew that he was putting himself on the wrong side of the law. That means going back to jail and being separated from Cassie again. That bothered me.... BUT... I understood that if they took the time needed to fully flesh out his motivation for helping Captain America it would make a very long movie even longer. It's just one of those things in movies that you just have to accept and not let it ruin your fun.