More soviet stuff, Tu-2, pe-2, I16, yak-3.
Token French Plane.
Spit 21 (perked) or a comparable Spitfire set to 1945 boost levels.
I think HTC could really make an effort in the EW / MW arenas by coming up with all sorts of different early war planes to make them arenas have a little more variety. Hopefully making them more popular.
1) I think the MOST important thing to expand on is the Italian (and to a lesser extent, the Russian) fleet. perhaps a late-war Re2005 for the Italians and a Mig for the Reds.
2) An Axis transport would be neat as well. Flying a C-47 in the AvA or any type of historic campaign on the Axis side is more than weird.
3) If we someday (in the far far future, hopefully) get a Spitfire, it should be a XII since that would be a logical stepping stone between Spitfire development. Or a Seafire LIII since it was the most common Seafire version... plus it had 4x rockets/2x 250 lb. bombs and/or a 500 lb. bomb. I'd like to have a bubble canopy Spitfire XIV since almost all of those had extra fuel, but that's not reflective of the Spitfire XIV. It would just be a nice feature to add to the Spitfire line to those who think Spitties have no range.