There's some really good versatile female characters, so no need to go 'token'. WW, Tomorrow Woman, Zat, etc..
DesaadHer appearance in JLA: Obsidian Age also made clear that she had a number of limitations, with her shouting "That's not how magic works!" on more than one occasion, the Ray finding a way past magic (which was pretty awesome), etc. And yet in that same arc Gammanae using Zatanna's powers turned Promethium into paper.
Stuff like that, fun as it is in a team book situation, I think is a large part of why magic books almost never succeed. No rules, no structure, so tension is impossible to generate. How can you feel scared for a character can get out of anything through any plot device?
I like the comic Gold Digger for having a much more pinned down set of rules on magic. You've got some really powerful magic users, but also set limits and knowledge on how it works, and mages even have specific styles, so you can be all "Even Archmage Theo Diggers is in trouble against this one!" and such without worry that he'll just pull something out of no-where, and different mages can be good at different things.