It would be great to implement in game wounding system like ACE i is little boring when you get shoot that u need to restart the mission or respawn it would be great if we get a chance when pass out to get up patch our self or when blackout that medic can help us up...
And of corse drag and carry option..that is the first thing that amazed me in A2 when i started playing so i woud love to see this in Arma 3
EDIT: Here are some examples