When playing a Disc Priest in SoloQ, you can get a Warlock and a Warrior on your team. I did a little analysis of the various setups that can be picked up in this mode, and came to the conclusion that this is LITERALLY THE WORST SETUP THAT CAN BE IN SOLOQ. There is no crowd control except fear, there is ABSOLUTELY no synergy between the classes, and it is almost impossible to win in such setup. I simply could not find any other setup THAT bad, where you have no synergy at all between each other. Even the Priest, Warrior, and Mage setup is not that bad, because at least you have polymorph, which gives you some space to play. So, is it possible to make changes to SoloQ and remove the Priest, Warlock, and Warrior team selection at the same team?
If you want to pick who you play with, you want to create an actual team instead of signing up for a mode that literally means you don't care what class you're grouped with.