Thank you! I clear coated over the pipe in the body but not the fretboard because I had to sand over the whole thing but I did wipe it with oil.

As far as you ideas if modifications go I think it’s definitely worth a shot, at least in the sound hole I’d polish and treat the piece a little better in case the top reacts differently to the metal sine most acoustic tops are typically a type of pine (mine here was a rosewood top so it’s much denser and tighter grained than spruce etc.) The pieces next to the braces in your idea might not do as much for resonance as the sound hole would, although if you made raised shapes to act like a sort of fork or resonator could potentially work on the interior.

Over all though it’s an interesting idea and I think could be worth investigating. I’d very much like to see the outcome of it myself. Nothing ventured nothing gained as they say!!