I am moving up steadily, I need to make a good push for it but being out of town this past weekend and the arena's fubar'd it is preventing a large gain. I'm at 1753 at the moment and can obtain higher. I just need to play more games.
The biggest part right now to identify is to know when to run and try to survive and completely forget about doing damage. I will routinely run LoS from the DPS and try to stay alive through their cooldowns. Putting pressure on them works as well but just about every class has an Ohhh snap button, so it's relying on more yourself to mitigate their damage as much as possible.

Best news I can say is that teams are running 3 dps 2 healers now which is huge and a much more beneficial fight towards us than 4 dps.