This is a recommendation for a new game mode that friends and I played on N64. We would select "Capture the Flag", but instead of all of us killing the flagholder, we would select 1 person be the assassin and whoever had the flag was "El Presidente." Since the flag makes you unable to use weapons, the other 1-2 players would have to act as bodyguard to El Presidente to protect him from the assassin.
As unfair as it seems, it was a ton of fun being an assassin and beating the odds, being El Presidente and acting like an idiot to make it a challenge for your bodyguards (who would sometimes kill you in frustration, which was hilarious), or being a bodyguard and dealing with whatever idiot was El Presidente.
With the capability of having bots, you could even allow El Presidente to be a non-player character or change the number of assassins so you are against several assassins (who you could also have be bots as well).