Re: original bath tub spout
I would tell that inspector to "bite me"! Assuming that this was a home inspector and not a building inspector, that looks to be a vintage tub and hardware, which he has no business raising offense to. While your fix does cure what the inspector was whining about, it is an eye sore and detracts from the authenticity and feel of the tub and room. Hopefully it is reversible. IMHO, home inspections are for the buyer to pay for and they are to note safety issues and general conditions of the property. You as a seller do not need to hire a home inspector nor do you have to comply with any recommendations made by them.
The only required repairs would be mandated by a pest inspector - again calling concern to the structure, not aesthetics or "potentials". Depending on the type of loan the buyer is going after, other minor details may be a "requirement" by the title/mortgage lender, however, you as the seller do not have to make repairs just to appease a home inspector or a potential buyer. If you negotiate them as part of the terms of sale to remediate "home inspection concerns", that is another story.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!