I agree with removing the 737, not distinctive enough.

In terms of aesthetics, I'd add:
the P-38 Lightening, the X-15, and the Soviet Ekranoplan. And a +1 to the SR-71.

Recognizeable, I'd add the B2, the B-52, the F-4 Phantom and the An-225.

My personal likes include the F-104B Starfighter, the P-40 Warhawk (w/Flying Tigers livery which I still think AA should have used) and the A-10 (fugly but I like it).