In single player the Marine fireteams system is reminiscent of Halo Reach, where you can recruit up to 3 Marines and they will follow you throughout parts of the level. You’d even get their names next to your motion tracker which was a nice little touch.
In coop, each player could recruit their own little Marine squad, and would get a nice little compliment of followers.
Infinite’s system is similar, with a clear indicator that a Marine has been recruited by their waypoint changing, and in SP the 3 marine limit was removed so you can really squad up with everyone you can find. But in coop the Marines only follow one player, and will only enter that player’s vehicles.
Can the system simply not be adjusted to something more akin to Reach? Trade the unlimited follower count during coop play for a 3 Marine per-player limit?