Hi Chapel!
Well, the K/D factor alone is very unfair and stimulates timid flying. That's why I chose to put it only as a moderator of the total sorties/total landed ratio, wich shows more accuratelly the attrition factor.
The only twist here is the moderation of the raw sorties ratio by the K/D factor, in itself a raw success indicator. The point is in landing the planes with kills, not bailing out to avoid beeing killed.
This would have to be calculated for each and every player, split by fighter/bomber/GV class, then calculated to the whole Axis or Allied side.
One side could be doing very well in fighters and poorly in bombers...so, it would keep his fighters but would have one bomber model disabled since his Sparrow Factor got activated, until performance improved again and that model was enabled again. Like a switch, do well, all fine, start losing too many machines, you're disabled until you recover your ratio...
The beauty of this system resides in not needing to introduce supply code and mechanisms like fighter factories, bomber factories or GV/Boat factories, and force to keep supply lines open by server action.
All it needs to do is recalculate the factor for both sides every hour or so...and proceed as instructed...
Cheers