this is actually a sick idea and is similar to my idea for a game show map, while the two teams are fighting each other there is a pseudo 3rd player in the form of a AI that is control of the facility, has gone mad, and now forces the contestants to fight for it's entertainment (not really a 3rd player but for the sake of the narrative that's the aesthetic i would go for)..
Functionally how it would work is there would be certain locked doors/ dead ends/ wrap arounds of the map, and each cycle a incentive would spawn in one of those, and only the AI knows where, and in between those cycles the players would be trying to lockdown where the AI happens to located in the map, to make sure they are the first to get that information, so they could get the jump on the incentive. The benefit is that i could have theoretically as many maps as i want all segmented by this roaming mechanic, and players would have these narrative driven maps in a living changing arena where the fight feels larger and more meaningful than in a normal map,
The biggest challenge i imagine would be finding a balance between making the whole gimmick be worth pursuing on their own, without making it feel like you are being dragged around the map to all these different theme parks and not being able to exercise creative freedom, the goal would be to make it an additional part of the sandbox that is beneficial but not necessary to win
Additional thoughts are: maybe the players can destroy the AI monitor once they get the information, to keep the enemy from getting it after they leave and following them down the dead end, but if they destroy it now the AI will be a different monitor next cycle, and possibly a location the team isnt as comfortable fighting in and around... yup lots to think about, maybe in infinite