We have a stage that waits for user input for 5 days before rejecting a build. Obviously, including the average time it takes for someone to provide the input into the build time estimates would really skew the average build time, since we only really care about the time it takes to perform steps without user input, such as compilation, archiving, packaging, etc.

There should be an option to exclude a stage or input step from being included in the average time calculation.