I like the idea of being able to level up via PvP and play at any level, but given what I've seen in wolves den having many different options to queue just split the population and made queue times ridiculous. It's a difficult problem to solve, one option could be scale everyone to max level in all PvP modes and give them access to all abilities. This obviously also has its problems, but it would solve the issue of queue times and would allow people to more easily swap around as different jobs.