UX Benchmarking: How much detail should be collected from a user within an enterprise product?

There's a lot of value collecting benchmark data about a user's experience over time. The problem that we are running into is how much information should we ask from our user to help us make informed decisions from data collected. We work on an enterprise product with many different personas, within many different areas of the product so I am stuck with how much data beyond our handful of KPIs should we ask our users for when the "Are you interested in providing feedback?" survey modal shows up for the multiple different user types that use the many different areas in the system. Is it valuable to get a system-wide benchmark without capturing the area that the user is most frequently in or using given that we will still collect benchmark data at a more granular level within each feature of the product?

The concern is what do we do with the data collected if it is from a user we don't know much about - the user could use multiple areas of the system and we can pull some analytics but there would be a lot of assumptions put in place. Has anyone out there that works on and enterprise product collected benchmark data that could share some insight?