What if each person (in dark star) got one of the three abilities?
It could work like normal queue.
You'd queue for, lets say, W, and then you'd get matched with people who got Q and E.
Autofill could also work. If the time is too long, youd get autofilled to Q or E. Autofill protection would work here too- you'd get it after being autofilled.
Personally, i would like to see this. I dunno about you guys but itd be fun to me.