Damage is king, lockdown is helpful, but neutered, and any PvP build should strive for maxing hp, then getting their respective role focused using procs, global recharge, and/or range if buffing or blasting. Look to snag an escape power like Translocation binded to a key or phase shift. Take a look at some of the pvp videos from the past three years on YouTube. The meta hasn't really changed beyond that.
Edit: Oh and here's a fun list from the early days of Homecoming that sort of talks about three pvp meta.