I would certainly like to be able to queue with my friend who I married for the laughs and swag, but I understand why the levelling roulette doesn't let you, since its there to encourage you to help newer players, same with main story and trial roulettes, at least we can queue for Expert/60/50 roulettes with a party just fine.

I love playing with my friends, but sometimes being in a group of randoms can lead to fun experiences, whether it be working well together, doing terribly or just having funny banter. I always love leaving an instance with talkative players and we happily say our goodbyes after a job well done. Some of my best stories are with randoms, so its worthwhile queuing for stuff solo.