I wouldn't let the self-service component scare you. If anything, this is an opportunity to hone your Training offerings. Simply by listening and observing to your community and identifying trends, your organization can tailor sessions specific to your customers [most popular or most encountered] needs. This is where you can demonstrate value.
This can be said for organizations that have a Premium Tech Support model. Customers leverage community to solve their day-to-day work problems. This allows Tech Support engineers to focus on the customers that need more in-depth, multiple day, complex, enterprise-wide solutions.