Trust me, shit like this can work. Once during the randomized event we got a set up with 4 mercys, a bastion, and a genji. Bastion got on the payload, 2 of us healed, 2 of us damage boosted, and he was literally invincible. People were so distracted with killing the bastion that genji could pick them off while they were distracted. And every time the bastion or one of us did die, we had 4 revives on deck. It was pure cancer, but a funny cancer where both teams were laughing it off.