This is pretty much the end result of my previous design sketches. While I kept those a bit more freeform, this is along the lines of something I could actually see being in GG2020.
But I'd probably not mind being surprised by the ArcSys design team and having them give her a full dress or something!

-Based partially on her Vastedge design
-All the designs shown so far seem to have a strong visual separation between legs and upper body, which is why I made her legwear an unusual (for her) white. White top with black stockings looked worse to me in this design, but should also be doable
-All the designs shown so far seem simplified, so no tens of belts on her top (not entirely sure about this, Axl actually looks like he has a bit more going on)
-Most or all designs shown so far seem to have asymmetry added, but I think Dizzy's wings already take care of that (and for May, it seems to only be her heart painting on the thigh)

Guilty Gear is (c) Arc System Works