I wish she were more popular actually. I think she's more recognizable, Iconic, than she is "popular". I feel if she were truly popular in the sense that Batman and Wolverine are popular, there would be a lot more done with her in respects to publications, multimedia projects and merchandising.
I think that of more people were to take the time to discover her, they would find a character that defines strength on so many levels other than just physical strength, and a character that is humble, intelligent, wise and sincere. She is a beacon of light in a genre where grit and grime is the fad of the last 2 decades in the comic industry and she is a dying breed in that regard.
And she is all of this while kicking ass for all of the right reasons.