Increasing xp gained by dps classes in leveling dungeons

[Bourne_Endeavor]

Bad idea. That would encourage people to play dps classes, which would make queue times for dps even longer.

Instead consider the long queue times as incentive to play tank or healer instead - there are already more than enough dps players in the game.

No it wouldn't. People aren't going to main a job based around queue times. Furthermore, a small bonus won't incentivize someone when they could run the same dungeon twice in the amount of time some DPS queues take. That alone defeats the entire point since you'd still level faster as a tank.

And? Not everyone is interested in playing though roles.