That's a great suggestion! I'm still going to get it repainted as the car deserves better than a hasty coverup but afterwards, I may have them install the spoiler. The carbon steering wheel and console covers are on my bucket list.I would just clean it and spray that small section yourself to protect from corrosion then just buy a spoiler than goes over the lip, something like this.
Model 3 Carbon Fiber Trimline Spoiler (From $229)
It's going to be expensive to fix and the paint color difference might be noticeable.