Change that "only have 4 airplanes" to "only have british&german airplanes" and you'd be correct.
come at me Karnak.  
That is also an odd accusation as I have advocated very strongly for Japanese aircraft.  In fact, my preferences when playing are British and Japanese fighters.  I generally don't advocate for American or German aircraft due to the dominance in their plane sets.  I also don't advocate for British aircraft much in the last five years or so for the same reason.  I do think we need more Russian and Japanese aircraft, as well as a few Italian and French aircraft.
What I focus on though are gap fillers and things that actually played a significant role in WWII.  Given the choice of the He177A-5, G.55 and Re.2005 I would pick the He177A-5 as it was more significant than the other two combined, but I wouldn't like that list of choices.
Things that I would like to see:
A-26 
American For MA use
B6N2 
Japanese Gap filler
B-17E 
or B-17F 
 American Gap filler
Beaufighter Mk VI 
British Gap filler
Beaufighter Mk 21 
British Gap filler, MA use
Bf109G-6/AS 
German Gap filler
Blenheim Mk I 
British Gap filler
C.200 
Italian Gap filler
CR.42 
Italian Gap filler
D4Y1 
or D4Y2 
Japanese Gap filler, MA use
D.520 
French Gap filler
DB-3B 
Russian Gap filler
Do217E-2 
German Gap filler, MA use
Fw190A-2 
German Gap filler
G.50 
Italian Gap filler
G.55 
Italian MA use
H8K2 
Japanese Gap filler, MA use
Hawk 75 
French Gap filler
He111H-6 
German Gap filler
I-153 
Russian Gap filler
J2M3 
Japanese Gap filler
J2M5 
Japanese MA use
Ju-52 
German Gap filler
Ju87G-1 
German MA use
Ju88G-7 
German MA use
Ju188A-1 
German Gap filler, MA use
Ki-43-I 
Japanese Gap filler
Ki-43-II 
Japanese Gap filler
Ki-43-III 
Japanese Gap filler, MA use
Ki-44-II 
Japanese Gap filler, MA use
Ki-45 
Japanese Gap filler
Ki-61-I 
Japanese Gap filler
Ki-61-I-Ko 
Japanese Gap filler
Ki-61-II 
or Ki-100 
Japanese MA use
LaGG-3 
Russian Gap filler
La-5 
Russian Gap filler
Me410A 
or Me410B 
German MA use
MiG-3 
Russian Gap filler
Mosquito Mk II 
British Gap filler
Mosquito Mk IV 
British Gap filler
Mosquito Mk 30 
British MA use
N1K1-J 
Japanese Gap filler, MA use
P-61B 
 American MA use
PBY-5 
 American Gap filler
Pe-2 
Russian Gap filler
Pe-2FT 
Russian Gap filler
Pe-2B 
Russian Gap filler, MA use
SB2C 
 American MA use
Seafire Mk III 
British Gap filler, MA use
SM.79-II 
Italian Gap filler
Sunderland Mk III 
British Gap filler, MA use
TBD 
 American Gap filler
Tu-2 
Russian Gap filler, MA use
Wellington Mk III 
British Gap filler
Yak-1 
Russian Gap filler
Yak-3 
Russian Gap filler, MA use
Yak-7 
Russian Gap filler
Obviously this laundry list is a pipe dream, so like everyone else I try to suggest what I think are the most important additions.
Common requests I do not include on my list:
Battle - Disaster in WWII, B5N2 is an excellent stand in
Defiant - Utter disaster in WWII, almost useless in AH
Fw200 - Long range patrol bomber, low use in AH and very weak
Halifax - Too similar to the Lancaster
He177A-5 - Utter disaster in WWII, would be good to excellent in AH
Stirling - Failure in WWII, Wellington works better to cover that time
Swordfish - Sank more tonnage of shipping than any other Allied torpedo bomber. Yay!  In AH it would be useful only for scenarios where it had no opposition.  B5N2 is a decent stand in.