Grand arena matchmaking is overly simplistic, seemingly using just total GP as the basis for ranking. I believe this results in very unbalanced teams of 8. Please consider more attributes in the process to get a matchup.
Not having Revan or certain legendary characters should be a must ...
Also, why not use teams of 4 where everybody plays each other. Seems unfair that I only get to play 3 out of the 7 opponents yet I’m ranked in the same setting?