Ertlov,
Great demo there. I had fun just watching so don't think I will make anything - just wait for you to make some more videos
Bullet drop/ aiming/targeting holdover :
Is a bit over the top unless you are trying to make real weapon training scenarios for someone and not making games for average users and apart from the vast amount of work and technical difficulties of getting any real life accuracy where a weapon and the projectiles behaviour would be affected by a mass of influences and the resultant impact and amount of damage also affected similarly. Bullet deflection for instance if you want accuracy of real life? A simplistic attempt might be possible but much like recoil you want a game to be enjoyable not requiring a technical calculator having to enter wind, range, muzzle velocity and all other parameters and other variable and waiting for the computer to come up with a calculation so you can adjust your scope settings or aiming trajectories before pulling the trigger!!
If you want to make the game more interesting and the enemies harder to kill then -
you got it - make them smart and then you have a fight and good game on your hands.
That's however just as hard or harder to do as programming the weapon trajectory, bullet drop, holdover and so on but results in a better and more enjoyable game.
I am sure Reloaded will have some weapon accuracy settings. Not quite the same thing but allowing some variation in gameplay.
Anyway on topic.
Nice Work Ertlov I enjoyed that
"You don't see 'im, till 'im come callin"