While it's true that the "coveted" armor is subject to RNG, I personally don't go for Monster Sets or anything like that. Pretty much any Set item/gear/weapon that I get in Loot or from a monster kill, I will never wear or utilize.Unless you have a build that encourages you to wear all of one armor weight, you are making it harder for yourself if you want a consistent design. Even if you make all armor of the same motif you still won't look good since different weights have a different look and feel. A lot of the coveted armor comes form RNG where you have no style control, so you are stuck with a clownsuit.
If you could reforge armor in a different style they would be effective, but as of now i'd rather have a costume