Choosing

This thread is an idea on when you make a troop/tank you can choose what kind of tank that it would be on the research line.So before you produce say a medium tank then you would choose what kind would it be based on the research line.

Examples-

Russian line - (medium tanks) T-34,BT-7, T-24, and others

USA line - (medium tanks) M3 Lee, Sherman Firefly, M4 Sherman

and so on and on

But I don't know if it would be too complicated or something so I don't really know but it was just an idea and wanted to get it out there so there you go.