You’ve gotten great advice. I’d call and talk to Peter, in this hobby owners / builders, designers will often give candid, great advice on their products. Not across the board but more often than in most industries. If you have that itch, you will always want to scratch it, if you keep the old wire, take pictures, you can always reinstall the original wire if you don’t like the upgrade.
The downsides are if Peter voiced the speaker not off of what the components cost but what sounded the best with his design and synergy with the other components, design, I wouldn’t mess around with trying to make the speakers “better”. Peter, if he’s honest can point you in the right direction.