I think the game really needs something new that would bring even more players in, fix the queues, and so on. The tech tree could feature vehicles like the M-84 (a better T-72), the SO-122 (a Sherman with a 122 mm cannon), and the G-4/G-2 Galeb (a strike aircraft). I know that three vehicles can’t make up a whole tech tree, but those are just a few out of many more.
To fill the tree even further, I recommend including other Slavic nations such as Poland, Ukraine, Czechoslovakia, maybe even Romania and Bulgaria. If you think this wouldn’t be a good tech tree or that it wouldn’t have many vehicles, remember that Israel exists!
This is going to get shut down in a bit because this isn’t how you do suggestions btw, there is a suggestion for it already if you want to go help support it heres the link
There are also other threads which you can use to discuss it, you can easily find them by searching them up, hope this helps! :)