This is a definite post launch discussion or this is literally becoming anime titty Duke Nukem Forever! That being said I really like the idea of unlocking sexier skins from levelling, but like Street Fighter we could give the player the option of using whatever skin they want ingame on hero deploy.
The launch date is close but we need to finalise a few items on the Nutaku contract. Once that's done they will give us a date. Apparently June has a tonne of game launches so it might be July now.