FWIW I offered Tony Holmes a text on JG 77 aces a while ago -as one of the few remaining units that Osprey haven't covered I was hoping they might be interested but they weren't...at all. So perhaps interest in 109s is on the decline? Or perhaps people imagine everything has already been said (..and seen). As for my text, small chunks of it appear in my two recent Casemate 'Luftwaffe Aces' titles.
http://falkeeins.blogspot.com/2020/0...77-battle.html
I've focused both of these - especially Vol II, 1943-45 - specifically on those units that Osprey hasn't really covered; JGs 4, 11, 77 and 300...