User blog comment:Archivist217/Expansion of Young Justice, if the series renews/@comment-800707-20121130205545/@comment-1038387-20121130224351

Re:3: you may be on to something with that. Greg mentioned he wanted two other guests at the bridal shower, but it would require four new character models - so civilian and in costume.

Since the only other women in the League are a) off planet and b) already have one design, it's very likely those were meant to be the members of the Team who were tried out but decided not to stay. I'm not sure on Donna, but Mary Marvel seems an option.