S!
Since Landing craft are a big part of the next release i would suggest the following to improve the amphibious scenarios:
Sherman Amphibious Tanks (DD)
One of the Marine amphibious tractors
Pacific
P-38J
Douglas Dauntlas
Ki-43 Hayabusa (for suicide plane as well as fighter role)
Ki-61 Hien (Standard Army fighter before Frank)
Ki-84 Hayate
Nakajima B2N6 Jill Torpedo plane
One of the many twin engined Japanese Bombers, your choice with provision for carrying bombs, torpedos and:
Baka
European Theater (Sicily, Salerno, Anzio, Normandy):
Reggiane Re-2001
Savoia-Marchetti SM79, SM82
Ju-87D
109G6 ASM (no, the G10 wasn't available in numbers until summer 1944)
Ju-88C, plus provision for fitting Ju-88A with robot bombs as used at Anzio, plus any other goodies required.
Spitfire IXLF or
Spitfire VIII
P-38H
P-47 D-21 Razorback
Beaufighter VIF with all the goodies
Mosquito FB VI with all the goodies