Dynamic dashboards are an interesting idea, but they require you to save the data to a data source and then recreate it with Cognos tools. Since the visuals were likely already done in the notebook, this is making a user go through additional, possibly unneeded steps. It should be possible to flag (magics perhaps) an image for inclusion in a dashboard. Dashboards could come in various formats (maybe limited control) and the magic could determine where on the dashboard it went. This could even handle images from multiple notebooks. Other products already allow something similar.