Concerning F2P Arena bracket, i played already a good amount of arenas in 5.4. As far as i and also other sees it, the battle fatigue increase ruined healing too much. Back in 5.2 you needed CC Chains and wise use of racials to kill something in a 3v3 Match. Now in 5.4 you just need to tunnel something and it will die (YOLO Mode). Hpally is the only really viable healer, since he has armor, bubble, hoj and dispell. Restodruids get globaled by warriors with arcane torrent (200 Swiftmends, qq), i dont even have to mention Discpriest or RShamans, they just totally take the D.
However im kinda disappointed, i thought when bgs are crappy atleast you can have some nice games in arenas.
I dont want to say arenas arent fun anymore, but Blizzard went much too far with the healing debuffs + dps buffs some classes got. There is still hope, they will fix something, so lets just pray
Cya in the Gulch /Arena