Which of these minor nations have the most potential for more subtrees and unique 1.0-9.0 planes? (Italy, France, China, Japan)

Game Discussion Realistic Battle
1

Hello people!

Title basically explains it, I really enjoy gimmicky stuff like the early hungarian aircraft, vautours, etc.

Cheers!

2

japans pretty good at 9.7 cause T2 basically 104G but lower BR

3

Italy can have a multitude interwar/WW2 props by its own, plus Romania is placed in the Italian TT, so there is a chance that we will see more of their designs.
Check suggestions lists, there is a lot of stuff (not everything, but still).