I understand your point Erich but I feel there is room for a comprehensive and up to date volume (or two) on the A series Fw190s. That authoring team,for those not so familiar with Luftwaffe subjects, have written some superb books already.Whether there is anything more to say on the D series following Crandall's three volumes and the two JaPo books,all of which I already have,is doubtful but new stuff turns up all the time.
Cheers
Steve