Hf rerolling you wont be missed. (hf with your fotm rogue next patch)
Edit :Even if you dont deserve it i will give you an actual response
Beta wasn't indicating that locks will be fotm when you could global someone with chaos bolt or chaos wave?I think you havent started playin beta early on then, because qq posts were all over the beta forums (and continued during release until 5.0.5 patch).
Lets see the overview of Warlock in Cata and MoP.
A Warlock during Cata :
PvE : One of the worst dps class (only superior to shamans), with the most complicated rotation and less rewarding in matter of dps.To put it bluntly, you were a Healthstone machine and ppl only cared to whom you will use your Dark Intent.That was all. I guess you were to busy playing your human rogue during that time.
Rbgs:Mediocre at best. Skill was the biggest factor to be in a group, and you were mostly able to get a spot because locks were a rare thing to get
Arena: Above average, yet nothing like a human rogue with PvE legendary daggers and PvE trinket (was getting boosted cause of items not actual skill). Again, warlock's skill wouldn't be in line with a partly PvE human rogue like you.
Now lets see MoP (and mostly 5.1, skipping release were locks were dominant (Blizzcon had 8 teams out of 10 with locks).
PvE: One of the best dps specs, if not the best, being able to top meters, with a rotation and DoT system that forgives minor mistakes (Unlike Cata). Now they will pick a lock because of its top tier dmg, single target or aoe wise, even in matters while moving (penalties for doing so hardly matter at all in most cases).
RBG: One of the best aoe classes, with great cleaving or focus dmg potential. In general, there are many rbg teams that will bring 2 warlocks and build their strategy around them (not the case in Cata).
Arena: Mediocre now, underwealming in 5.2. Even if destro and Demo were far ahaid during release, nerfs put them into the ground. But still, thats not only Warlock's fault, but the overwhelming utility of other classes.You can still perfom some roles, like doing sustain dps as affliction, or heavy phase dmg as demo/destro, or bring up opportunities for your teamate to score kills.
So to Sum it up a Warlock in MoP vs Cata
Rbgs: MoP Warlock > Cata Warlock
PvE: MoP Warlock > Cata Warlock
Arena: Mop Warlock < Cata Warlock
So atm a warlock in MoP had a big overhaul in all three specs and seems like a new class (3 unique resource systems and spells categorized better), perfoming much better in 2/3 parts of the game. Cata Warlock was like a relic of the past, specs were mested up, and was superior to Mop's Warlock only in 1/3 part of the game.
Now the thing is, if Blizzard decides to buff Warlock so he is better in Arena, how it will affect the 2 other parts of the game? Representation in rbg and PvE are indicating that we have to get toned down, not otherwise. The real question is not how they have to buff warlocks so we are viable in Arena, its impossible all these classes and specs to be viable in all aspects of the game. The question imo is what they have to do to tone down the CC (maybe nuke and sustained dmg too), so some classes are not so superior to others (not excluding warlocks). Now the only logical turn if they intend to keep things like this, would be to get Mortal Coil as a base spell and get a new talent (the only option imo to boost arena lock without affecting PvE)
EDIT 2: Don't forget that in 5.2 we get a 10%stamina buff, a 10% spell dmg reduction and 6% melee dmg reduction(10% - the armor removal ),Also with the Sarcificial Pact change it makes it viable to get it as in GoSac spec too (plus that it boosts pet's survivability). Instead of blood fear we get a defensive cd (they will twick Blood Horror more for our favour imo), a speed reduction immunity (new burning rush), and maybe the option to spec into a second trinket. So maybe we loose the BF, but we atleast get some viable options in return.And with the buff on rogues and dks, we have some good allies back for viable compositions (e.x RLS or shadowcleave)
Infracted for flaming