VR downgrade version device development idea

What needs to be done for VR to be widely used as a pad or mouse keyboard? I think, above all, it should be cheap. However, it is impossible to reduce the price with existing VR components. So, we are launching a new device that consists of only a basic position recognition sensor + controller, replacing the existing VR headset + controller. SVR, an abbreviation downgraded from VR, has a lower degree of freedom than VR due to the 3D freedom of the controller and force sensor, but is easier to experience than a pad or keyboard mouse. I think that if we create a stair-like device between VR, pad, and keyboard mouse, entry into VR will become easier.