I would like to tweak the four-team regional format. Right now, you can win your first game, then lose your second game, and then find yourself in an elimination game against a team you already beat. If you lose, you will have split two games against the team that just eliminated you, with your other game having come against a team that won its first game, and their other game having come against a team that lost its first game.
Current Format:
Game 1: A vs B
Game 2: C vs D
Game 3: Wgm1 vs Wgm2
Game 4: Lgm1 vs Lgm2
Game 5: Lgm3 vs Wgm4
Game 6: Wgm3 vs Wgm5 (Wgm5 must win twice)
Game 7: if Wgm5 wins Game 6
Suppose A and C win the opening games. Theoretically, A could then lose to C and then have to defeat B a second time to stay in it. If B wins the rematch, then A and B will have split, A will have the tougher strength of schedule at that point because they had to play C, and A is out.
I suggest:
Game 1: A vs B
Game 2: C vs D
Game 3: Wgm1 vs Lgm2 (Lgm2 must win twice)
Game 4: Wgm2 vs Lgm1 (Lgm1 must win twice)
Games 5-7: If Lgm1 or Lgm2 win in Games 3-4, they will play again. If neither if-necessary game happens, then Games 5-7 are a best 2 of 3 Final. If just one if-necessary game happens, then Game 6 is the Final, with Game 7 played if the undefeated team loses Game 6. If both if-necessary games happen, then Game 7 is a one-game Final.