Help with a patch simulating vinyl deck type audio playing

Hi there,

I'm working on an interactive installation where a turnstile is equipped with a sensor outputting its absolute position in the range [0. 1.].
One thing I'm struggling with is the attempt to make it act as a vinyl deck. Attached is a simple patch illustrating my idea that contains a simulation of the physical turnstile.

At least two things could be currently improved :

1. The "vibrato" effect
2. The ability to "densify" the audio file across the turnstile position. In other terms, to get smaller movements having a more drastic effect. The resolution of the encoder will be 360 steps.

Thanks in advance for your thoughts.