Dslyecxi I totally agree, but you need to remember several things. One the action menu is like Arma's signature so Bohemia is not in the mindset to change it currently. Two the Action menu was introduced at first because of the fact that this is a "simulator" it will have more complicated actions then just 1 action per object. For example when you talked about the unconscious guy, you said I should be able to use my action key and start dragging. Now what if you wanted to heal instead of drag?
The solution to what I said could be that you can hold an "Action button" which gives you a circle kinda like in Assassins Creed that you can choose what to do by moving the mouse towards that action and releasing the Action key.