The transform shaders only change the texture space which is used to calculate the shader. They don't change the magnitude of the displacement, although this is a feature that I'm thinking about adding.
Fake Stones Shader has a function input to control the scale and another to control the "tallness", so it is possible to control it with separate nodes (e.g. a Constant Scalar or Constant Vector). Depending on how your network is set up, you might find this useful.