Faster queues would be the main thing to get me to PVP more often. Especially if queues were even possible for a larger portion of the day. I've started working night shifts lately so outside of two days I tend to work through the only time it's possible to PVP lately. And since I have so little free time in general, I'd often rather queue up for something I can expect to actually get into rather than spend an hour sitting in a PVP queue.

Also less folks whining and bitching about me dying (go figure, I'm not invincible when the other team decides to focus on me!) or not being able to perfectly LoS the enemy while maintaining constant line of sight and range to all my party members at all times would be a nice bonus.