Player skins are really awesome and love the fact that the first one even has some play doh strapped to him in case he gets bored on the battlefield 
Drone on the other hand(although the model is good) i don’t think it fits with the environment.I thought you wanted it more realistic and having blasters and drone like that 2013 movie Oblivion kind of moves it away.Probably a more modern quadrocopter drone that fires a machine gun?
If you want the sci fi element like metal gear 4, than maybe most models will have to get some sci fi elements to their armor too.You know, combine something old with something new that is beat up metal(but not that new)