Normal base raiders goal is to get as powerful as you can. New base raiders it doesn't matter what you do. In the end everyone is back at the same spot.
But why would say those two gangs who control 50/50 fight? So one can get majority, get pride of winning, then get put on same grounds as everyone else? Heck you don't even need two gangs. One gang controls as much power as they can without going over the threshold and then just purging everyone else that tries to get power. Same no competition, except with slightly less power for the big gang.
the goal of new base raiders is also to get as powerful as you can, its just that when you hit that stage where you are irrevocably able to dominate the entire server the game resets before that stuff goes on for hours at a time.
if a goal is presented before clearly before players they will try to achieve that goal. there is no real reason to accumulate power in base raiders except for its own sake but people do it anyway. there is no real reason to kill people in a tdm except for the sake of winning, of which there is no reason to pursue, but people do it anyway. people have hosted servers where you literally just walk up stairs for hours and people do that stuff anyway. players do these things because they enjoy them and because that is the goal presented, but when a scenario like in the op happens and players are incapable of doing stuff because they keep getting forgeted over there is a problem.
the two-gang scenario is possible but as previously stated is less likely than in traditional base raiders. for the one gang controlling everything scenario, slightly less power can be significant depending on what threshold the gang needs to pass to win and its an improvement over normal base raiders where one gang would own all the power and there would be no possible chance of retribution. it isn't possible to solve the whole players griefing stuff by not winning scenario unless you go the tdm route and make it so one player doing something wins the game regardless of others, but that is just the nature of base raiders and without more significant revisions than what i proposed it is not possible.
a lot of these problems probably stem form jack noyer hosting because hes jack noyer and likely flubbed my idea significantly and loveually assaulted the playerbase