This might sound too extreme, but if you're wanting to make AI aircrew seem real, you should also animate wounded, panicked, and dying/dead crew, as well as fire-fighting efforts, first aid attempts, and bail out routines.
If you're wanting to go whole hog with Aircraft Marshaling Signals, here's the list:
http://www.defence.gov.au/DASP/Docs/Manuals/7001059/eAMMMweb/Referencefiles/s03c12a.pdfOther goodies:
Instructor pilot hand signals:
https://www.flickr.com/photos/78792726@N00/3044351725/List of current USN/NATO hand signals for aircraft, very complete:
http://www.navybmr.com/ABE/study%20material/NAVAIR_113.pdfA list of foreign military command signals might also be helpful, although there doesn't appear to be any standardization, so no point in adding them unless they're common. While it appears that WW1 German pilots mostly improvised things on a squadron level, there were a few cavalry commands which appear to have been common, like the leader pumping his fist up and down to indicate "attention, a command is coming."
Thread here:
http://www.theaerodrome.com/forum/showthread.php?t=31023#post330774Possible useful gestures, like those taken from Rise of Flight:
Pumping L/R fist up and down
Waving L/R arm forward
Waving L/R arm out to side
Morse Code - as used to communicate during radio silence by USAAF pilots (and possibly others):
Tapping fist into palm of other hand = dot
Tapping extended index finger into palm of other hand = dash
Numbers from 1 to 10: 1 to all 10 fingers extended on one or both hands.
Possible others:
Salute = "acknowledged/respect"
Drawing finger across neck = "dead/killed"
Point at map while shrugging = "where are we?"
Using flare gun while seated in cockpit - can be pointed in different directions
Opening canopy while seated in cockpit - sliding/hinged type
Closing canopy while seated in cockpit - sliding/hinged type
Attaching/removing oxygen mask
Taking goggles off/putting goggles on
Shifting helmet visor up/shifting helmet visor down
Immediate action while seated in cockpit = manually clearing and cocking guns which are accessible from cockpit to clear jams.
First Aid/Injured
Bandaging leg wound while seated in cockpit
Bandaging arm wound while seated in cockpit
Bandaging body wound while seated in cockpit
Unconscious/dead in cockpit = body slumped, head moves with plane's motion.
Deploying fire extinguisher while seated in cockpit
Beating out flames with hands while seated in cockpit - gruesome, but not uncommon during WW1 and WW2.