It's hard to keep track of everything already suggested so I apologize in advance if some of these have already been submitted. Here is what I would like to be able to do:
2 squad mates exchange places
throwing weapons/ammo/medikit to other squad mate
forced fire (no need for a valid target) to destroy a wall, etc. (maybe require to press CTRL for that)
I haven't seen a squaddie faint so far they always die but if it's in the game, the ability to drag the wounded
I hope it is all within the capabilities of the engine and you consider implementing them.