Lopunny, this mod is a compilation, not a collab. The factions in this mod were not made specifically for this mod, they were not balanced specifically for this mod, and a few of them weren't meant to be balanced at all. There were not any ground rules for mods being balanced in this mod, because those factions were made before this mod even existed. The creator of this mod decided to add in the mods that might not be very balanced, knowing that they weren't quite perfectly balanced, because he knew that some people wouldn't mind that those factions were slightly more of a challenge, and because he had added an option to disable those factions for the people who did mind. The creators of the factions which are overpowered did not create those factions to boost their ego, they created those factions for the people who find the balanced factions too easy to beat.
This mod is not spoiled by unbalanced teams, because each and every person playing the mod has the ability to disable the teams that they think are unbalanced. The factions you choose to play with or as basically determines the difficulty of the game with this mod. To play on uber hard, play as the pirates or ASP, to play on easy, play as the council. To play on medium, you might play as the blackrock or shadowyards, and disable the council or nihil faction. How hard the game is is entirely up to you.
Please stop playing on hard and then complaining about the difficulty level, when the creator has given you ways to change that difficulty level.