Possibility to define animations via animation variables and defining rotation axle like in MTS? It works like that:

[rotation point: x y z (coordinates of rotation point) ] ,

[rotation axis: x y z (here you define the vector direction either by typing n or -n where - or + defines rotation direction and n value multiplies rotation angle, you can also define this axle by using spherical coordinates to use custom rotation axle) ]

[animation variable: throttle / brakes / reverser / doors / engine shaft / radiator fans (add gui interaction panel for such things where you interact with animation variables and assign shortcuts to your favourites for example)