because its a rigged system in tbc and blizzard went away from it in later expansions, having rating requirements on stuff that impacts your stats as heavily as in tbc is terrible for competitive pvp (hence why arena tournament servers give you all gear immediately). Of course in a game like wow thats not so easily applicable and don't ask me for a solution that satisfies all players, but purely speaking for competitive pvp, having rating requirements on all the gear just causes more games to be decided by gear and not the player's skill. Personally i think the best but arguable also a kind of boring system is the stat templates they use on retail now. So your gear still matters but the gap between a fresh max level toon and high end geared toon isnt bigger than 10% in competitive environment, where in tbc its like 100%.
Regarding the warglaive issue just look at that team
http://armory.warmane.com/team/alxh+...utland/summary , unlike the current #1 team, they played to #2 with an almost undefeated record in a time where many people had s4 weapons already (unlike the current #1 team did). So not that he's just farming everyone due to glaive skill, hes also farming other rogues because they don't have access to glaives. I know nothing about that player and maybe he knows how to play flawlessly but somehow i feel like the game would be more balanced if, considering 2v2 is dominated by rogues anyway, other rogues had access to warglaives aswell before season 4 titles are getting handed out. If you don't care about competitive pvp this is perfectly fine because he's one of the chosen few to wield warglaives so he is supposed to be overpowered but competitive wise, a total desaster.
to finally move back to the topic: The sooner the shop gets upgraded, the better for balanced pvp, the worse for rated activity.