With the recent drama of china vehicle in japanese tech tree and game being online for years now and changed significantly, how about a complete overhaul of a tech tree idea?
Make them geography driven, not national.
rough idea
America - USA, Canada, Mexico, an entire South America…
Western Europe - France, England, Italy, Spain…
Central Europe - Poland, Czehia, Balkans, Hungary, Turkey, Ukraine… (Germany could go here, boosting lower BR and not making Western Europe too powerful)
Northern Europe - Scandinavia and Baltics
Eastern Europe - russia…
Middle East and Africa - SAR, Israel, Iran… oh my… (but this area is at war for 2000 years now…)
South East Asia - India, Pakistan, Vietnam, Thailand…
East Asia and Australia - Japan, China, Korea(s)…
What will it do for the game?
less political issues and ability to add any nation to the game without controversies
copy paste will not be seen as a lazy addition
fresh dynamics for sesoned players
much better lineups for small countries
gaijin can sell the same premium vehicle yet again for a different TT like they did with STRV 81
But if arranged that way, players will have a choice how they want to fill their lineups.
eg.: Will it be China only, or maybe Korea only, or mix of everything if they wouldnt mind?