jit.gl.syphonclient "@unique 1" option to avoid duplicate frames?

[z-l-p]

I often have GPU-based jitter patches with framerates derived from jit.grab objects using the "@unique 1" attribute, so all my rendering is locked to the current frame-rate of the camera input. Then I output those patches to a Syphon stream at matching fps. So far so good.
BUT, the jit.gl.syphonclient object will output a frame whenever it receives a bang from the render chain, even if it's a duplicate. Since there is no gl version of jit.change, it would save a lot of duplicate processing if jit.gl.syphonclient would only output unique frames, so one patch could be "genlocked" to another via Syphon. Thanks for all your amazing work!