Adoption Data; reducing churn, driving growth

I am writing an article on the importance of capturing and analysing adoption data in the B2B space. It's the leading indicator of customer health. Knowing:

• if customers are using the products they are paying for
• how much they are using those products (and functions/ features)
• how easy they find it to use those products (eg online, integration)

Is fundamental to being on the front foot and engaging customers in the proactive discussions that improve customer health, reduce churn and lead to upsell opportunities (amongst other benefits). 

For those happy and able to share, I'm keen to have any market insights or intelligence. 

• What does good look like? Who is best in class?
• Quantifiable impact of adoption data on reducing churn and generating upsell
• Adoption data white-space analysis driving new sales opportunities
• Other costs/ benefits

Many thanks – Richard