If you plan to level everything, eventually you'll do that. Including new jobs. Just because it's new, it doesn't mean you need to rush and get it right away.

Enjoy what ou have now otherwise you won't be able to enjoy what you'll have later.

And remember: You have to finish the 2.0 story. From 3.0 and on you'll have all the oportunities in the world to clear whatever you like with the new classes, since I highly doubt SE will stop uptading the game with new content anytime soon.