I've always felt we needed some 165 type jobs maybe from paramis/BBW.
Make em group jobs and make it hard enough you need 3-4 people ( use say 62-65 mobs)
Frankly the 150 jobs in xt ( combat wise) i feel are to easy for the 140+ max weapon toons.
Make it where everyone has to be 150 3 people grouped min.
This is a team based game and solo aspects so leave xt solo and make bbw/paramis group only big mobs(groups of mobs) ( nothing like a 66 manes popping up at a nav)