What should my next proffession be
All professions are viable in all game modes, really, so that’s not an issue. For variety of skills, I would recommend elementalist, certainly, and possibly engineer. Personally I had the most fun with mesmer, which is slightly less nerve-wracking at lower levels after the feature patch. But really, fun is subjective. I enjoy mesmer because it is complex and requires skill, but many people enjoy warrior for the opposite reason.