I think you have done a great job of refining this idea both functionally and visibly. My one comment here is that you may want to create or begin to visualize hooks or other parts for holding the ropes in place so that users cannot just move them around freely. With the BOM and manufacturing all thought out, this is a great plan.
Visually, I think there is maybe a tiny bit more work to be done on the inside of the well and some of the details, but I really like the high-quality renderings and how you are already beginning to think in terms of 2.5-D, it is a concept I had forgotten. You guys seem very on top of visual representations