It's not so much boring, IMO, as it is... set in stone.
Right now there is a lull. We don't know about the expac info besides a few previewed talents that are too early to call.
If you think rogues are not good enough in pvp, as I do, then... wait till next expac. No guarantee it will be better, but the devs simply won't address it. Hardly any top rogues? They all rerolled? 0 rogues at the tournament, not even for one single game (even priests got one game!)? Don't matter. Blizzard won't fix.
In PvE, rogues seem to be tuned about right. The only classes above the devs have been publicly saying are OP for literally months. But the mechanics will all be screwed up for next expac.
The mop redesign shit on rogues. Deleted them from pvp, made the class mediocre in most pve situations. But, they started adding fixes. They made it playable in pvp, and good in pve. It took them about 8 months from launch to finally make up for the page long list of punishments that were unnecessary, untested and unviable. Everyone QQed about cata rogues, but they were over twice as fair as mop warriors, only having a small edge on the charts. Comp diversity was high. Now it is shit.
Will WoD feature a similar deletion and nerf package? I don't know. I'm enjoying my raiding now, but the pvp is so fucked up and weird that it feels like an obligation, and so many other games offer real pvp without this baggage. I like nailing good CC chains and kills and tricking players, but I still hate the skill system. I mean, just LOOK at most classes talent trees- they are almost all pvp tricks. Six tiers of pvp tricks for rogues, and one effects raids. Many classes have "choose a CC school" as their talent wave at certain levels. It's clear why they did this- as pve tricks, they would have a devil of a time balancing everything, so they were only arsed to do so with some classes. Further homegenization (readiness) will make this even harder, as the choice between "take this passive" and "take this cooldown" will make readiness have to skip that cooldown.
So, we don't know what the devs are doing. Thus far the wod changes look awful (IMO, esp gear changes), but it really is too early to tell.
I'm not posting much because I don't know what's going on next, and partly because I'm very unexcited about WoD so far. All of that could change with like, a tweet. Or better yet, a cool dev watercooler or big forum post. But we won't see any changes for the rest of MoP- you could come up with the best rogue idea in the world, and we wouldn't see it implemented until WoD.
Where it would be a monk talent. Did you hear they are getting like, killing spree? But they will be invincible during it. They're so novel. What a good idea.
The previous posts covered the big ones- mutilate's entire mastery is poisons- but I wanted to cover a bit more.What makes Assassination the "poison" spec other than a large portion of its damage is poisons? Assassination is the "poison" spec yet it uses the exact same poisons as every other spec. It only has two additional abilities that even involve poison, one is venomous wounds which no one really even notices other than making sure to keep rupture up like every other spec. And the other is envenom which is eviscerate with a buff.
Mutilate being poison lets me deal real damage to a plate wearer in pvp, even one with a shield. Envenom is amazing compared to eviscerate on such targets. Deadly poison is FAR more potent in the hands of a mutilate rogue than a combat or sub rogue, and this is notable. You will hardly ever find yourself multirupturing as sub, and NEVER as combat, but often as mutilate. Why? Because of venomous wounds! Each VW proc gives you energy. And of course, targets must be both bleeding and poisoned to trigger that. Gods I wished it worked with crimson tempest. Our aoe would actually not be a third of everyone else's in all three specs.