5.2 is bringing SUBSTANTIAL pvp buffs. Most of them are "unnerfs", taking us back to 4.0-4.2 and even 4.3 levels of play. 4.3 saw us as overpowered- not the most repped class or anything, but more rep than we should have had. 4.2 did not have this, and neither did 4.0 (where we were basically poor), yet sub was similar.
It is my opinion that 5.2 will probably be "enough"- our representation will rise to an appropriate number, and rogues will not be the tissue paper suited only to hold the issue of the superior classes popping swifty macroes.
But... what if I'm wrong? Many of the changes in MoP hurt the rogue class on a fundamental level. The inherent defenses of mutilate and combat rogues were deleted. The rotation a sub rogue gained an entire finisher to function (rupture), and HAT was nerfed to produce combo points under fewer conditions. AoE stuns, in many cases stuns that actually deal damage instead of costing the caster damage, were handed out to several classes, including classes that we haven't seen much of yet, such as monks (monks have almost tied rogues in main-rep at 90). Classes that were based around burst instead of CC now have (and will continue to have in 5.2) both. This is the least balanced season since season 1, and it's possible that some of this imbalance is due to the talent distribution- something that won't be repaired in 5.2. So, it's possible that rogues will need more help.
If I'm wrong, and rogues need MORE help... what would you like to see in 5.3, or hotfixed in 5.2? That's my question to the mmo-c rogues.