Advices needed

Hello fellow warmane players

So it's like an year since i left TBC and moved forward to this awesome expansion. Since i started Wotlk i've been playing only a hunter.
Right now i wanna take a break from my hunter, and start a melee class. At first i was debating between a ret or a war, and i was thinking of saving up for a smourne, but hey, almost everyone is a ret or a war loling with a smourne. So i was thiking what about a rogue ? I was playing a rogue back in tbc. So i started leveling one here.

My concerns are:

How viable is a sub rogue in PVP ?
They doing good in casual arena ?
In duels, which class counters them and its hard to win against ?
I also saw that they are very squishy, taking really hard damage..

If i am to stay on a rogue ill get Heaven's Fall, Scourgebourne axe, and Twilight Scale + DBW


Thanks in advance

If you're referring to Lordaeron, sub rogues rock in PvP. Warriors/DKs/Paladins seem to counter pretty hard, and occasionally Druids. But any caster is pretty easy to solo, and you can absolutely shred people. I'd vote for rogue, it's a satisfying class.