In a perfect game, every spec would be balanced. It would have it's strengths and weaknesses but overall competitive on equal terms. Unfortunately, this is an MMO, they are terrible to balance properly but I would like to see Blizz address issues that actually need to be addressed.
For example:
- Ele shamans are still the only caster dps class that can run out of mana indefinitely. They haven't done a tiny change all expansion to address it. They also suffer from a complete lack of defensive cooldowns.
- Rogues are extremely dominant right now and the excuse for NOT putting out a small patch or hotfix is the unofficial motto of 'MoP will fix it'.
- Fire Mages combustion just carries the spec right now, without a strong combust, fire mage team has a tough time taking down a target.
Tbh, favoritism seems to be a key point in balances this expansion especially. The amount of frost mage changes and buffs I saw that weren't really needed pre 4.2 was astounding yet other classes were in the gutter of PvP and PvE yet didn't see many changes. Anyone remember destro locks pre 4.1? They were mediocre in PvP but were good in PvE. Got nerfed to oblivion and didn't get a single tweak until 4.3.
One thing that people should be afraid of in MoP is self-healing on pure dps and non-healer hybrid. There seems to be so much of it, it's going to be a pain to balance on top of damage, healers and CC.
If you want a more balanced, sensible game of PvP, try something that isn't an MMO and get's attention from the developers, like SC2 or BF3.