I don't follow Ms. Marvel, but GWW's Air was an underrated gem. The tone (upbeat, quirky and adventurous) that she used in Air would be an appropriate fit for Wonder Woman. Diana's flagship book should never be grim and gritty, that's just not who the character is or should be.
Maybe a new Wonder Girl that's a minority or an undocumented migrant. I could see GWW making WW's world a little more ethnically diverse. I suppose BlackEtta can be considered a start if they utilize her more.