As the title says really, I thought it was pretty cool when they allowed you to switch the nationality of the Rudy but as far as I know that's the only switchable tank in the game.
Has there been any news or announcements of tanks that could get it in the future?
I figure tanks like the Tiger II C could be American/German (German made, captured by Americans)
The 59 Patton could be American/Chinese (Mashup of American and Chinese vehicles which I don't think ever actually existed)
Then there's all the low tier captured French/German stuff (French made, captured and modified by the Germans)
The two variations of the Tiger I could be cross nation as well with 131 being German/British and the Type 6 bring German/Japanese (Both German made, one captured by Britain and one made by designs sold to Japan)
A bunch of American and British vehicles could be cross nation due to the lend-lease program between the US and the USSR. This would include;
Matilda II
Valentine
Sherman's
Churchill
The almighty M3 Lee
I think it'd be a good idea to restrict it to premium or reward tanks to stop tech trees becoming a complete mess of cross nation tanks but it'd be nice to see more cross nation vehicles in game.
Source: https://www.reddit.com/r/WorldofTanks/comments/w5913q/has_there_been_any_news_on_multi_nation_tanks/