The topic about inheriting bind group state between pipelines has been brought up in various occasions but we haven't established a clear story for it:

• Create sketch.webidl #47 (comment)
• "Inheritance" in Choosing a binding model #19
• VertexBuffers and Bind Group namespacing #167 (comment)

We need a proper specification of how inheritance works as well as the notes on how the implementation can do it. I would very much prefer if, for the implementation, we don't require a check on every draw() call and instead do the appropriate checks on binding the pipelines and bind groups.