I like the Battle Skirt look a lot too but I'd say that's where it oughta be reserved for... battle! As for her classic bikini outfit, I say why not?! Heck blend it with the skirt if need be and perhaps we may still get the pants. I don't mind the pants at all but here's hoping we'll get a more classic look.
As far as Gal Gadot goes, I support her all the way. I was kinda on board with her choice among the 3 who were considered in the first place. Now I also wonder if she'll wear blue eye contacts as well. I'm sure she'll look stunning with blues.