Here's the problem with your assessments it's not about her powers, or panel time, it's that the little we've seen has been incredibly subpar. One of my favorite moments in this series was how terrifying Destiny was she appeared only on a few panels and in that time he captured her personality and sense of self in ways I didn't know possible having read little of her previously. What I and many others are saying is especially because of what we've seen she is lacking all around even in relationship to those with less panels.
You don't agree that fine, but you can not tell others what's their experience especially when while far and few in between she's had better writing.