Customer SuccessCon Seattle 2016

A Customer Success team inevitably acquires a lot of data about the customer in the course of their work together.  Effectively applying that data, however, is often another matter, especially in balancing the relationships with Sales and Marketing.  How should the Customer Success team build the credibility with Sales to where inappropriate prospective deals can be stopped before they become a retention problem?  And with Marketing, so that the marketing campaigns attract the right kind of leads?  Why should an individual Success Plan be done for every customer as a part of the selling process?  Who should do renewals and up-sells, and how should that process be handled?