User blog comment:Superdawnfan/People Thought To Make Great Main Villains But Wouldn't/@comment-11883116-20161126214918/@comment-30651472-20161126221636

Gotta agree, Jo needs her moment to be an antagonist. While she was on the Villainous Vultures team, she was never the clear antagonist like Mal, and only gave mean nicknames to people. She at least has the ability to be strategic (and pull Heather's move from That's Off the Chain in Up Up Away in My Pitiful Balloon) and has an established rivalry with Brick, Lightning and (somewhat) Heather.

I feel like Eva's temper would get in her way, plus she usually just picked on one contestant (Bridgette) despite her demeanor, most likely because Heather was already the villain of the season and she wouldn't have been as developed. I feel like the writers realized that Justin was a failed antagonist and that's how Alejandro was born. As other's have said, Jo is likely to sub in for Eva, so it's unlikely she will compete again.