Just did this today and was with a group full of people all doing duty roulette. We ended up getting Copperbell Mines, but the lowest level among us was lv 35.

Personally, I would love it if it grouped 4 people to the highest possible dungeon, and not to some random lower level dungeon. The entertainment value of Satasha is pretty low versus say.. Qarn, or Stone Vigil.

Anyhow, I like this system, I just wish I was doing more variety as it seems I never get much dungeon variety. Infact, seems to be Copperbell... ALOT :P. Highest dungeon I've gotten on low level so far has been Haukke (which is fun, but that only happened once)