A pretty big list of planes with dated graphics:
A-20/Boston
A6M2/A6M5
Ar234
B-26
110C/110G
C-47
C.202/C.205
D3A1
F4F-4/FM2
HurriI/IIC/IID
Ju-87
Ju-88
Ki-61
Lancaster
P-40B/P-40E
SBD
TBM
Yak-9U/Yak-9T
Would rather HTC concentrate on updating these than making any other changes*.
* Miles Sound System for instance.  Not positive, but I think that was when VOX went south.  Yet to see all the "extra" sounds we 
could get from the change.  Not to mention the fiasco with eliminating and re-implementing the advanced sounds slider.  How much time has HTC spent on Miles, that could have been used on updates or new planes?   

Edit:  The above whine is my opinion of course, but does anyone think that Miles is an upgrade?