Well, Zeox, as ive saw, you're trying to implement Blizzlike services. I support the suggestion about sets by rating.
Aswell id like to suggest a blizzlike implement as same as you implemented Elite gear vendor.
Well. This NPC: http://www.db.pandawow.me?npc=70101/armsmaster-holinka
It sells items according to his Season, for example, season 14, he sells season 14 gear by Honor points to players who areadly got 27000 conquest points in that season. Example. ive got a Pala retribution 550. and now i want to farm the holy gear. i could be able to get 550 items for honor on the npc *ONLY IF I HAD 27000 Conquest points total in that season*
This is my suggestion. Blizzlike. If need any proof or anything tell me. Id appreciate to share.
Edit* Well. got the proofs.
http://image.prntscr.com/image/33efe9725b524bbba238cda1bd03d4fb.png
Hoolinkas twitter: Read all
https://twitter.com/holinka/status/400422225477500928
http://us.battle.net/forums/en/wow/topic/13272427819