Here goes..
Game mode or map mission
Allied troppers have a parachute spawnpoint *from air , pretty high up for non detection where*
Misssion obejctive secure crashed chopper/plane/transport *squad of 3-5 ppl*
get em alive to the pickup point *outside city or something*
Funtion
well have 1 squad on the allies side that have max number of 3-5 ppl that spawn as the "soldiers in need of help" give em pretty normal pilot gear pistols maby have some m16s to defend em self with.
resque squad have specops (without c4) medics and support.
Enemy forces (Mec/china what ever)
work as normal with 3 spawn points 300-500 meters from the crash site..
mission capture the transport personal (kill)
have no idea if this is possible to make in bf2 but would be nice with some mission oriented maps / game mods for once.
Other things that would be nice::
#scuba gear for water to land sneak attacks.
#Civilians (simular to AA)
#Some silenced weapons with good silencer sound *its not noise less*
#add radio noise in hellis (like war talk incoming msg) gives a pretty nice feel remeber ghost recon had that and it added tons of more feeling of being in a helli in war.
#Better smoke nades, have red/yellow smoke nades for marking out pickup points for helli pilots
#Add helli/plane pilots as class (only to use planes and hellis)
#Realistic tanks 3 ppl to use em correctly driver/gunner/commander *machine gun guy*
#Moving from driver pos in tank to gunner takes more time, not insta switch as current bf2 has
#3-5 first bullets in clip (assult rifle) are tracers, makes it easyer for ppl to see what your shooting at. (used this my self when i did my army training worked good) have no clue if this is possible but its an idea.
may have more ideas coming out, ill post em l8ter
sorry for the bad english..