If I was able to do something I would like to see some type of physical aspect other than laying prone and shooting...
even it its just quick hikes of 1/4 mile between shooting sections to get your heart going
walking through a creek, or hoping stone to stone, climbing over a bundle of logs, something
field craft could be interesting something you have to start a fire before proceeding but you have no matches or lighters, see how well people packed at that point.
how about trail run/jog/walk 1/8 mile stop 100 push ups combined WITH PACKS ON, finish another 1/8 mile run/jog/walk
shoot
trail run 1/2 includes minor obstacles like large log has to be moved 10 feet but CANNOT be rolled or something dumb like that.
then shoot
One leg of the course a range officer just picks (or by random draw) a person on your team who is now injuried and cannot carry his pack, you have to leave it with the officer, You get 2 minutes-5 muntes to go through both packs to repack anything that might be needed.
These are just ideas, but would give a physical aspect to it without having to have 15,000 acres and a mountain