I was thinking the same thing. Do use the bulkheads over existing or replace. It appears you replace the mold injected with phot-etch.

I personally think it waste of time. I will not commit major surgery on my kits to use photo-etch. To enhance them yes but not replace my kit with their photo-etch. If a kit was so missing in detail I would look for 3D printed replacement not photo-etch.

Give it another 5-6 years in advancement of 3D printer technology and I do believe photo-etch will be obsolete.