It wasn't something highlighted in the statement of direction for this year but you never know what's in the feature release.
Putting it in as an idea and enough users want it then it will be considered for a future release.
Reading your document it refers to snapshots book marking the chart. This already happens in Sense in view the note and comment feature is centered round a particular object which I see could be beneficial if the object provides the definitive view of the change you are describing. Sense through stories allows the user to bring a number of points of view together to illustrate a change and the reasons for it or to focus on just one view in my opinion a more flexiblle tool but it does take some getting used to.
