It doesn't have to be "Marine's Only" lol. I know a Marine would jump in any vehicle if his life was at stake to be honest.
Use them to your full extent.
I would like to see an appearance of new CO-OP Missions, also some new vehicles which ill list below:
EH-60 Black Hawk
UH-60 Black Hawk
TAV-8B Harrier II
Maybe some UAV'S?
Boeing Scan Eagle
Maybe some new Land Vehicles? (Hint the FUCKING large ass map)
M113 Armored Personnel Carrier
Chenowth Advanced Light Strike Vehicle (ALSV) (Advanced Version of the Desert Patrol Vehicle)
Maybe some new guns?
M141 Bunker Defeat Munition (Advanced Version of SMAW)
Maybe some Bayonets? With different animations when knifing someone? Also maybe give the other person a chance to defend themselves if coming up face to face?
M1 Garand (Like Battlefield Bad Company 2)
Those are just some of the things I would like to see happen that probably wont... What about you?