If possible, can you add some intense music when certain events occur. Two to three different tracks rotating with each event There were some great tracks in all of the Wildlands trailers, that you could probably use. Give players the option to enable/disable if they choose.
Some Event Examples: Hunted, Engagement, and Unidad Threat Level Increases.
It would really add to the action.
Also, can you add the song "Friction" from the E3 reveal trailer to the vehicle radio station.