It should be possible to set a variable on an animator controller that is assigned to a station. This way, a character could for example procedurally change the pose on a vehicle using blend trees or we could switch between different poses on demand while the player is in the station.
This would also be very useful to circumvent a lot of restrictions that make the use of stations very limited right now, like rotating an avatar on a station without rotating the viewpoint to deliver a motionsickness-free experience.
Those are the functions that should be available on a VRCStation:
VRCStation.SetAnimatorFloat("floatVariableName",floatValue);
VRCStation.SetBool("boolVariableName",boolValue);
VRCStation.SetTrigger("triggerName");