As a player being around since the inception of the game, I've seen all the changes happen from Shaman wrecking people with Hand of Rag windfury to the current problems with Legendary weapons and imbalanced trinkets in game. That being said, we've seen a shift in the pvp population from being skewed in the favour of horde in the past, to now being majority alliance. For example, take a gander at the 3v3 ladders, starting with bloodlust: http://us.battle.net/wow/en/pvp/arena/bloodlust/3v3 - try browsing through the other realms and you will see that majority of teams are alliance with some battlegroups, such as Nightfall, being so bad that ALL the teams from 1 through 74 are alliance.
This trend has been the obvious result of the effect of racials in pvp. The undead Wotf was considered one of the prime pvp racials in its time and many serious pvp'ers joined horde as a result. I'm sure the inability to faction transfer back then kept the horde numbers from swelling as drastically as alliance have now. With the introduction of the blood elf race to horde we did see a shift where people who liked the 'alliance look' had an excuse to join the horde and not be - is 'ugly' the word i'm looking for?
Anyway, fast forward to now, the human racial EMFH is quite undeniably the most powerful pvp racial in the game. Yes this is mostly due to the ability equip extremely powerful PVE trinkets. Now, the new changes to MoP with Pvp power and defense is said to mostly solve this problem and not make PVE items too strong in pvp. This is a step in the right direction, though the pvp power/defense system in itself deserves another thread. My concern is that even with this change I see compelling reasons to stay human. As a pvp'er i'd still much rather have that trinket slot free to equip the on-use trinket and the health-boost one, for e.g. Plus, it's not like pve trinkets will be completely useless either.
I'd like to hear everyone's thoughts on how this could be more balanced. My first choice would be to make racials not affect gameplay mechanics and only have flavour racials. The reality is that this probably won't happen. Blood elves will cry up a storm at not having Arcane Torrent, for e.g. because we're just too used to having these toys. More realistically, what if EMFH was a baseline ability with humans given something to compensate? I'd like to see some balance, closer to 50/50 in the Alliance vs Horde spread, not only on arena ladders, but Rated Battlegrounds, random battlegrounds as well as servers.
Note: I'd love to see some actual discussion here instead of derailing this thread into a bitch-fest.