I need detailed eSPORTS Idea

I am fully aware that having esports component in the future is part of the roadmap/contents that need to created. However, from the speed of game development, I am not sure how soon this will be implemented. Thus, I am trying to design a fair match where 2 parties can complete with an objective scoring system. The scoring formula will basically include cumulative experience points among all party members and time to complete all missions.

Here is the challenge! and I need creative/detailed ideas!

Although 2 parties enter exactly same dungeon/same level at the same time, types of monsters in boss room and map of the dungeon are different.
That being said, certain party may win the competition just by chance, which will potentially drag the entertainment/motivation down.
Any idea is very welcomed! thanks in advance.