One of my favorite things in games like this is group combat. I like to play support, healer, etc.
1v1 duels are kind of nice, but I mainly use them to learn how to hold my own and survive in case I get isolated. It's certainly not something I would specialize in. I also like to roleplay and get immersed in my character. I don't mind the bashing tedium because I can do it occasionally for a half hour here and there on my smart phone.
What would be the best class for me to play? Flavor is less important. Not saying it isn't important, but I literally feel like I can assume the role of anything, be it Priest, Sylvan, Monk, or Occultist. What's the best class for someone who wants to focus on a support role in group PvP?