It's so much easier to go through sprint planning after the sprint has started. One example is that we can't accurately plan a sprint when we don't know the amount of carry-over, which happens automatically when you start the sprint. And it's much easier to use the plug-in Capacity Tracker when it's showing the current sprint (which it won't do by default until the sprint has been Started).
But, once you start a sprint it sets the line for the Guideline on the burndown chart...which means you need to have the work (tasks) completed otherwise you get a worthless burndown chart.
I need a way to start the sprint, but don't yet set the markers for the sprint burndown chart. When sprint planning is complete, and I'm confident the team has been properly loaded, I then want to "start" the sprint burndown chart so that the Guideline is correct.
