Also, I don't understand why as a community we can't just come up with a standard set of rules for this crap. If they are standardized, then there are no more problems. They are what they are.
I'm all for a community wide standardized stage select. That is an excellent idea. Personally I feel like it makes the Injustice community look divided and I'm all for unification.
Pausing mid match is the same for every game in the FGC....you take the loss. There's really nothing to discuss there.
In regards to general rule enforcement it is the responsibilty of the TO to set them in stone, up front before the event. The TO should also make these rules clear to every individual running brackets and stand behind that person when enforcing rules. When a rule is broken, either intentionally or by accident, there's no call to be made. Rules are rules. Stick to the script. Obviously the TO can't spectate every match so there is some responsibility that falls to the players to notifiy event staff if a rule has been broken. The player by no means should feel bad about that. We are a community after all so we all need to play our part and work together.