having randomness on the skins of weapons, armor, cloaks would be a great feature, maybe have a chance of masterpiece weapons to have random glow also.
This is something that might happen at a later point. There will be very soon a cloak-skin-remover-item. It will change the skin of a ROG-cloak to a regular cloak, so that your guild emblem's visibility is much better.
I agree, I'd like to see things get mixed up a bit or at least for lower levels look like standard armors. Feels silly, every player looking more or less the same atm. But I'm sure there are much bigger concerns for now.
One way to differentiate yourself is to use dyes. I've only seen two people with any dyed gear since I started. Dyed armor would break the monotone look.