With Legion and old god-void themed SP and shadow and light balance thingy discipline, I hope that there will be more shadow-old god-void themed sets. Personally I think that priest suffers from ugliest designs ever made, except for few beauties like soul priest and its mythic version, t8 and few others.
Blizzard became lazy beyond reason, TBC kind of lazy and we won't see different model pvp sets.
I never really understood why warlocks got that Sha armour, why did they get tentacle armour from dragon soul or why in the seven hells they have this beauty: