My point is that even though there is protocol established by the region how reffing duties are done at these region tournaments, exceptions need to be considered when multiple teams of the same club are entered for purposes of being impartial.

I doubt that will work in most cases. Ad hoc changes to officiating assignments aren't easy or desirable, especially for the tournament director. Changes like these require having teams that are available to referee, which tends to conflict with the goal of intelligently setting up brackets and referee assignments to maximize play while minimizing downtime. The extra time in the gym, waiting for other courts to finish to find a "substitute" ref team, and constant changes to a team's schedule, all seem like a lot of hassle to avoid having a team work a match where their clubmates are playing.

In some tournaments, this may not even be possible - I've been to region tournaments where as many as six teams from an age group are from the same club. You can hardly avoid pool play conflicts in this case, much less ref assignment conflicts during bracket play.

The kids that would cheat to help their teammates while keeping score or calling lines are probably the same ones who are incessantly screaming "TOUCH!" every time they hit a ball into orbit. This has less to do with the club they play for and more to do with their value system (or the values being demonstrated by their coaches).