Pay Attention to the Other Team’s Remaining Options
There was always a small amount of guess work associated with this mode but this time around there is more information to go off of. So take advantage of it. Before the mode became a lockout elimination, it was incredibly hard to plan for a sudden change in the enemy’s team composition. They could whether play it safe with the same trio that took them to victory or attack with a new gameplay that leaves your team unprepared and unable to properly adjust. Having the better composition is an advantage you want to have and now the guesswork has gotten a little easier. When a team wins with a certain composition you may want to consider using heroes that they typically would have been a hard counter against.
For example, realizing that the enemy team has already won with Zarya will make D. Va a more viable hero option for your team in the next round. If the enemy team no longer has options like Soldier: 76, it might be the best time to try out Pharah. Of course, this is no promise that there won’t be any character left who can deal with these heroes but it does help increase the odds that the enemy team won’t be quite as prepared.