from another discussion, i'd like to see some extra damage variables added to the aircraft.
i don't know exactly how damage is determined but, whatever the method if it's possible to add a few points to certain areas, i believe it would a bit of unpredictability and add to the "immersion". nothing whacky though.
top of the list would be the engine damage, right now it's oil leak to dead engine or just dead engine. i'd like to see an oil hit that doesn't always blast the canopy with a thick film of oil, especially when the engine is hit from below.
fire in the engine compartment for a fuel line or fuel pump hit...not huge flames, just enough to cause some smoke and kill the engine after a few seconds.
cylinder damage...maybe 1 or 2 cylinders getting hit causes the engine to sputter and lose power, aircraft vibrates until the engine dies or gets shut down...on the multi engine planes the graphics would show oil spatter on the cowling and white smoke.
instrument panel damage...bullet enters the cockpit, misses the pilot takes out some gauges...depending on where the bullet came from (high 6, high 7/8 oclock, high 4/5 oclock) different gauges get damaged.
gunsight damage...would be nice but, may require some prerequisites to occur that aren't currently calculated in the damage model.