I find Deva interesting because, while physically very formidable, she actually prefers to manipulate people. She's one of the few supervillains who doesn't routinely over-estimate how strong she is. Also, I really like the basic concept of a supervillain that was literally created to take WW out.... but ends up not only failing but getting helped instead.
To be honest what Deva needed was a more open-ended story and a reason to be a more lingering annoyance.