I don't know how feasible this is, but it would be really cool if viewers of a dashboard could add data to a dashboard. For instance, I have a dashboard that allows you to search baby names and to see the history of those names, when it hit peak popularity etc. It would be really cool if I could make the filter selection an input source for a word cloud that would populate the data in a separate chart to show what names were most commonly searched for by the dashboard viewers. I think this could be a really cool crowd-sourcing tool and there are so many potential different applications. In that same dashboard I have my own pregnancy timeline to show you how far along we are, but I could make a chart and just input that one data point and then allow any other viewers to add their own expected due dates.