Elizabeth Moon (fantasy and mil sci fi writer and a former marine) happened to write a book about almost exactly this modification being available: https://www.

Elizabeth Moon (fantasy and mil sci fi writer and a former marine) happened to write a book about almost exactly this modification being available: https://www.amazon.com/Speed-Dark-Novel-Elizabeth-Moon-ebook/dp/B004BDOJN6 https://www.amazon.com/Speed-Dark-Novel-Elizabeth-Moon-ebook... -- I enjoyed that more than the canonical "Flowers for Algernon"