More vanity items in PvP, as we have said many times, are something that we would like to do. We understand that only having power upgrades as rewards in PvP is not something that the community enjoys. At this point we have an aesthetic and [url="http://ptr.wowhead.com/item=95349"]strong weapon enchant[/url] available to PvP'ers which has both a rating requirement and conquest point cost.
bring back arena tabards and gear sets for certain rating would actually make people improve in the game This is something we hear a lot whenever vanity rewards are mentioned in PvP, especially the request for tabards. We know that players would like additional incentives and goals to achieve higher ratings in PvP, outside of just item upgrades. In the future we hope to add more vanity items as rewards in PvP, unfortunately at this time we have no new information on what those vanity items will be or how they will be awarded. :(
I think players are more worried about the lack of cosmetic upgrades from playing at high(er) ratings. The Elite Set was always something they could "shine" with (I personally just wear it because it is one of the most amazing DK Sets so far) and provides no stat increase (excluding the T2 Weapon). You have decided to add the Elite Gear as a new tier with enhanced stats making it an actual necessary upgrade
to the normal set. In my opinion you would be better off removing T2 as a whole or just removing the 2,2 requirement off the weapon. You haven't found a proper solution to people starting later in the season anyway so this change seems almost unjustified. I agree it will be way more fair to give everyone the opportunity to get T2 to balance out Arena and RBG slightly (I agree T2 is ridiculously overpowered versus T1) but there is no reason to remove the requirement off gear until you find a proper solution for the problem that motivated you to make this change.
Also, have you thought about a way to make this enchant more attractive for Death Knights who heavily rely on the Falling Crusader enchantment? Perhaps a new runeforge ability for Death Knights only?
There are so many things you could do to reward players at higher rating. A lot of them not hard to implement swiftly.
It just feels a bit LFR-esque unfinished to me, and I doubt I am alone in that, though I won't judge.