Are you seriously complaining that the color of item rarity does not match Diablo? Yes, different games use different colors, but it's just something you have to get used to. It's not a flaw.
I'm also unclear what your complaint about different item quality is. There were what, 4 flavors? White is normal, Blue is minor magic (just 1-2 modifiers), Green (2-3 modifiers), and Legendary (3-4 modifiers, which included special Legendary-only modifiers). There was also Unique (Gold) which have fixed, special modifiers.
