My vote would be for Ranger/Monk. You are already somewhat familiar with some of the Ranger skills. It would allow you to learn some Monk skills without straying too far from what you already are familiar with. If you are wanting to get into something totally crazy, try Ranger/Mesmer, the ultimate interrupter. I will go out on a limb and say you will never have as much fun as being an interrupter, or unstoppable trapper.
With the Ranger/Mesmer combo, you can use Mantra of Resolve to keep you from being interrupted when trapping. You won't get MoR until late in the game, but you'll love it when you do. It's so fun running up behind people (in PvP) or monsters and trapping away while they can do nothing about it