I think everyone is only giving importance to the robes, without thinking that also they bring hat, gloves, pants and boots, that would serve to use and to mix with other things that we already have and thus to have more variety.

Here screenshots in more quality of the outfits. The boots and long gloves would be very useful, as we have only a few that are for all classes. (Oh and by the way, dyeable horns!)
Angel:



Demon: