At 1st I was thinking to get one of this, but than I realized that it would take away a lot of space in my apartment. You need to have a dedicate game room or space in the apartment because it can't be taken apart . So unfortunately it was not for me.
I think this will be modular so it will be possible to later add more dof (degrade of freedom) passing the 3dof that I think it offers as standard.
I see this as a more comfortable and high end solution than the yaw