As far as the complex formations, you could have the AI run the diamond and do the basic stuff with a spotter on the ground to take screenshots or whatever. For the real thing, you would need to run it in MP with others who are decent pilots. It would take a lot of practice, but can be done. My squadmates and I can already do quite a few of the display formations such as the diamond loop and inverted passes. The only problem is simply we all suck at creating addons/scripts or else we would've done this long ago.