I would love to see gunners on bombers that were auto gunners.  WWII bombers were not all easy targets, and since getting multiple people to fly with you on a buff run, the auto gunners only make sense.  I wouldn't want to see gunners like some of the buff pilots on all positions, but some level of competence, and variability.   
It'd be cool if there was a way to actually have huge raids that were done on occassion as a special event.  Attacking a large bomber formation would be interesting.  I know the 1000 plane raids are not a viable option, but seeing auto-gunned large formations would be an interesting target.  You could let people gun from the bombers, and fighters attack to their hearts content.  
Just a couple thoughts.
ULDieter