This was the very first thing I thought when I was taught about requirement traceability matrices in uni. I was like "Ew, why is this happening in an Excel silo?" I had already known about ways of adding metadata to code in Java and C#, so I expected everything to be done in plain text formats so that tooling could provide information like "If you touch this function, you may impact these requirements and these user stories." or "If you change this function's signature, you will break contracts with these other team members (here's their email)."