The whole point of Duty Roulette was to help all the low level characters and people stuck in story queue times, it was designed to increase queue times for those people considering Duty Finder is required to continue the story.

That being said, letting people queue up in groups wouldn't have affected that goal anyway, because not EVERYONE is gonna pre-made queue, there's heaps of solo and duo players out there... heaps of friends play together, couples, etc etc.

Glad they are changing this.