I think a way to bypass the FFC and click "through" to the layers under it would be really handy for these situations. I'm not really sure what parts of the interface are easier/harder to edit but I could see this working a few ways:
- Add an option to the right-click FFC menu to access the current layer combo menu for the clicked location
- Add a keyboard command for this (i.e. CTRL + click bypasses FFC's)
- Make it so that a long mouse press will bypass FFC's