You can also have an index file that describes when to use each file (nest with additional folders and index files as needed) and tell the agent to check the index for any relevant documentation they should read before they start. Sometimes it will forget and not consult the docs but often it will consult the relevant docs first to load just the things it needs for the task at hand.
I tend to think it would lead to them forming opinions about the people they interact with as they learn what it's like to interact with them, and that this would also influence their behaviour/outputs. Just imagining the day where copilot's chain of thought starts to include things like "Greg is bossy and often unkind to me in PR reviews. I need to set clear boundaries with him and discontinue the relationship if he will not respect them."