I recently fell out of bed and woke up thinking about this!
Currently the Support Class has no use for using the Air Support, since it basically has 3 boxes that restore the same as an air drop
So I want to suggest two possibilities to put exclusively in the Support class, since it is weak in terms of accessories and weapons:
Possibility 1: Adding an exclusive air kit that restores allies' plates and helmets, costing twice the air drop, would help many who were simply revived and have no way of surviving longer!
Possibility 2: this is crazy, but I've never seen it in a military game with several players on the map other than Warzone!
Add a Juggernaut Suit just for support!
Even though he has some parts that resemble this (like the helmet, etc.), his protection is very weak on his legs and arms.
The suggestion I recommend is to just add a kit that can be activated when the squad has 2000 points, in addition to the player who activates it must be a leader.
In his hands he will use an M134-A2 ,to balance it will be similar to the helicopter (heat), but it will be a little weaker
your movement will be reduced by 20%, but you will be able to withstand more shots (maybe 2 bazookas, but not a shot from a tank)
I know the last one might be crazy, but the support class still has a lot to improve!