I'm a ScrumMaster for a software firm, and we have a project that is entering its 35th Sprint. While I appreciate the value of Retrospectives, it's becoming progressively more difficult to get good insights from our Retrospective events. We have shortened the meetings to avoid wasting a lot of time, and even the short meetings don't seem to get as much content (or quality content) as they used to.
I'm wondering what strategies the good people of PMX use to continue to get value out of Retrospectives, even for a very long-running project. Are there different formats that you use as a project goes on longer and longer? What insights should we be looking for later in a project? Do you stop doing Retros altogether?
Thanks for any insight!