Hi JohnFitz,
Just who would you suggest who could write such a book? Maybe you should write one for Osprey yourself!
Actually, the first edition of
Austro-Hungarian Army Aircraft of World War One had wonderful color profiles by Alan Durkota based on information from Dr. Martin O'Connor. However, Pete Grosz didn't want any color profiles in the second edition.
You really need to look at Marty O'Connor's wonderful
Air Aces of the Austro-Hungarian Empire 1914-1918, but I realize that copies of this are difficult to find and very expensive (I think there's one on ebay right now?). Of course, Osprey did publish a book by Chant entitled
Austro-Hungarian Aces of World War I which was based uncomfortably closely on Marty's book. It has a few profiles of Phoenix D.I's and D.II's.
Marty did a lengthy and terrific series on Austro-Hungarian aircraft camouflage and markings which appeared in many issues of Cross & Cockade Great Britain, starting in 1986.
Good luck,
Greg