What is going to make this fun for you?

[bolox]

ummm, ok

i don't fall into the category of just being focused in the 4 categories you start with(tho #3 has some interest), working comms and AI are the areas i'm patiently waiting for improvements in.

As to your ideas, there are some good ones in there, tho some could be done now- ie the racing, map SDK would be rather helpful here i think(and hopefully adopted into game 'properly' at some point)

Trick flying/aerobatics- done right it could almost be a sim in itself. The scoring system would be 'interesting' to say the least

Gunnery/bombing accuracy yeah- but how about the gunnery being a target towed behind a plane . You get to see the target close up after flight to see how bad your shooting is

However i think you are missing a trick (and probably the majority of CoD users) by ignoring the offline side of these ideas and as CoD is meant to be 'the same' this should be relatively simple to incorporate such ideas in both.

just my thoughts