Yeah, i can easily pick up anything, but as i said, i just want a class that i can create some breathing room to heal, i really had getting a rogue or something on me, they just like... RAGE being a rogue i never knew how annoying i could be, i can almost never get a cast off, with the shaman i was always running at slow speed and couldn't cast, i just want one that can peel for itself and has some instants
Druid's are the one's with the highest mobility of our group but I am honestly unsure of how they are in PvP at this moment. Might be something to look up if you're interested.
Rogues and healers have never been friends but I'm trying to figure out what you mean by running at slow speed with a Shammy. Shammy's have a couple of different slows they can use along with Earthgrab which either roots an enemy in place or slows their speed down till they can kill the totem. I haven't PvP'ed on my Shammy in MoP but in Cata I usually threw out Earthshock, totem, RT on myself and then ghost wolf to get away. If I was taking a lot of damage I would to toss ES on myself though couldn't have it permanently on as it would mess up my mana regen after a few minutes.
In fact, I found it usually pretty easy to free myself from people and flee. We also have Spirit Walker's Grace every few minutes that allows us to run and cast though is susceptible to spell steal (which I still think needs some fine tuning) and dispell. You also have access to healing totems to toss out as you flee.
Paladin's are still in a really good spot as far as both BG's and RBG's are concerned.
Granted I've never bothered with RBG's and only do randoms when the PvP itch strikes or to blow off some frustration but if your team's not competent to peel off you then you're going to have issues to begin with regardless of which class you play. Rogues were always the bane of my existence on many toons (including back when I was on a PvP server) but if that's the only class you're basing your choice of healer on perhaps you should widen your net a bit. Especially since Shammys are still doing really well in this season.