I have a few suggestions.
1.)When it comes to Halo tournaments, there should not be a ffa regiced tournament, because if the king stays alive for a long time to make it worth 50 points to kill him someone could kill him and blast pass people without having to get as many kills as the other people. For example lets say your the king for over 5 mins and get 10 kills during that time and you get killed the person that killed you basically just got 10 kills for the price of 1. Someone could have 20kills and lose while someone else could have 12 kills and win its just not fair.
2.) Some weapons/armor abilities that need to be banned from use are: Boltshot- this needs to be banned because its just overpowered. The jetpack needs to be banned because it disrupts the flow of the game. Its extremely annoying when people just jetpack to chase kills ect...
3.) There needs to be a set of custom gametypes that are used at each tournament to balance the gameplay. Gametypes like slayer, ffa, capture the flag, king of the hill, and oddball.
4.) You should try to reach out to the forge community in KSI to have custom maps used for tournaments.