Intertwine, as I see it, is a control structure for dynamically generated clipping masks. The only way we can create zones to control these masks is to use pseudo-tools, activated with the specialized Edit command. This is fine for quick appliances, but is not so great when you need to make a precise work, with snapping, complex shapes and several iterations.

We got a Sax-a-Boom, but now we need a saxophone.

I would like to add any other shapes, created with any other tool Ai offers, as zones, to an existing or a new intertwine — like Live Paint allows.
We need better integration of this.
We need it to work for pros also, a tool rather than a toy.

It has so much potential!