Why would Claude code help you find unused features? The end customer uses features, not the AI. I would want to know from the end customer whether a feature is unused, and a Junior with an LLM assistant is not going to be able to tell me that without adding new features to the code base.

Am using Claude code as an approximation here. 2 years down the line the tooling around analytics will get integrated in AU assistants and they will be absolutely able to figure out unused features.