Benefits (How this will benefit the server and game as a whole):
Would give marines more coordination, would give standart marines some more things to do beside shooting each other. Muh immershun.
Details (Description of how you think this would work, the benefits, etc):
There would be at least one marine in squad who can always have a stable radio and who will work as relay between squad and the rest of marines. It would be neat of SL could be able to come to that marine, grab a handset attached to backpack and speak into it while radio guy stands still and cover him.

"RO, we need more SADAR ammo and new helmet for me urgently.