You CAN'T force people to group in a certain time for a certain game they may not like !!!!!
Here's a feed back, People hate the star guardian invasion, People are frustrated ! Onslaught should be optional away from ANY mission, that's in general fact. I know MANY platinum and Diamond players who lost like 30 games and won only 2 or 3, I know a guy won only 1 out of 20 !!!!!!! that should tell you how stupid and silly this is becoming. I'm saying this as clear as possible, PLEASE CHANGE THE MISSIONS, RIOT ! if someone is even paying any attention to these posts then please do something about it. getting A is NOT happening to high elo players not to mention low elo ! it's getting very frustrating, it's extremely rare where people win, Most important it's extremely hard to find 5 people who intentionally want to pre-made and get frustrated to finish missions, Please: 1- make the mission wins for either completing a game "like on the PBE" not winning OR winning the Normal mode. 2- NO pre-made requirements ! people won't dodge, they'll "TALK" and find a common ground, I've seen it happen, when they didn't know it was a "pre-made" they talked about which mission to do before the game started and when they found out it's pre-made, they hated it and got frustrated. "YOU CAN'T FORCE PEOPLE TO PLAY A CERTAIN GAME MODE IN THE SAME TIME. IT'S NOT WORKING, LOSE THIS PART PLEASE."