I think for now she's better off staying in the stable. She's kind of the glue, if anything I think AJ and Big E will try to screw Dolph out of the title later to give Dolph a chance at a face run. AJ will likely continue to be an on screen harlot either way... WWE has kind of settled with that gimmick for her I think.
Edit: Though I would prefer a chickbusters reunion. I actually liked AJ Lee for a long time, her gimmick is just stale. I think it would be better if her and Kaitlyn could at least try to make the WWE Divas division relevant.