More frequent cluster mine or minefield : it could help making explosive specialist (and especialy the mine detector) actually revelent
Opening UAV terminals (while keeping Greyhawk locked to the CAS drone slot) to other classes
-Spotter > darter
-Engineer > ED-1 (both versions, though only the military one is worth taking)
-Medic > AL-6 medical (express first aid kit delivery)
-Explosive specialist > AL-6 (or 2?) demining (if thats a dedicated drone or just a DLC specefic modificationof it)
Missions
Convoy Escort (side mission): protect HEMTT trucks from rebells (IED/mines on roads & ambushes) to its destination
Help out a stuck BLUFOR vehicle : get to it without blowing yourself up, then clear a path for the vehicle in the minefield/UXO from cluster bomb and drive/escort it to designated area
Evacuate civilians : inside AO in large cities, evacuate civilians that didn't got out in time (escort to designated location)
Capture : inside AO or as side, capture & escort an officer or commander ; can be a optional mission from the HQ side mission giving more credit when I&A4 is out
Medivac (side mission) : a downed helo has to be retrieved, pilot secured, helo destroyed with explosives and the pilot escorted to safety, wounded pilot can be a member of vortex if he volunteers
Naval support (priority) : an enemy ship has been spoted at the coast, board/destroy it before it start hitting allies in the AO with its cruise missiles (could also work as factory producing CAS aircraft id its a carrier)