If you want to promote diverse teams, I would suggest - every team needs to fit into one of these two rating caps:
Player 1: Unlimited rating
Player 2: up to 2000 rating max
Player 3: up to 1800 rating max
Player 4: up to 1600 rating max
or
Player 1: 2100 max
Player 2: 2000 max
Player 3: 1900 max
Player 4: 1800 max
The first kind of cap would allow JT and Mizer and Syndicus to be on competitive teams with the highest-rated players, without having a Yudi + Foley type of stack. (Allowing a Yudi + Foley on the same team would ruin the tournament by making only 1 team viable to win). The second kind of cap would allow other high-rated players to be competitive against a team led by Yudi or Foley.