You focus on graphics while tanks drive like bricks and should have this mechanic long time ago.
One of the most awaited features for sure, I love RT and mud puddles as much as the next guy but tanks turning like tractors in the most advanced military simulator is embarrassing.
I’m going to put on my conspiracy hat and say that it will never be implemented because it will cause the mobility of all tanks to skyrocket and bring balance issues to the game, e.g. making maps feel way smaller, encourage people to just zoom around corners like arcade and what not.
But I don’t think it’s all that grim, some tanks would really benefit from it, specially the Challengers. I’ll say it will come to the game eventually but not anytime soon.