I think a basic function would be to allow you to adjust the seat. Up,down,backwards or forwards. Too many times not being high enough in a seat does not give you a good view.
This is a great suggestion.. There are times I wish I could move the seat forward closer to the controls.
I play bus simulator also and to be able to adjust the seat makes all the difference and more enjoyable. It’s a basic function for driving any vehicle. Can’t understand why it’s not been in the game.