It could be really helpful to have an optional space (easily hidden, if needed) where one could add a description to the entire section. This space could house general instruction or best practices for the tasks within the section and/or a few specific details that are needed when completing the work that you may not want to have attached to each individual task. As a current workaround, we've seen people create an "Info" task to house this information. The downside to this is that it can get lost in the mix with other tasks and there is always a risk of it being checked off and then hidden on the completed tab.