A few weeks ago I was asked to make a dashboard for a client of ours on the last evening of our hack week. In two hours I had a proof of concept up, the client had a live URL and gave us feedback immediately. We are now devoting resources to making it real. We have angular to thank for that...
Source: I work at chartbeat.
Also you should checkout our product demos, our quality of product is never sacrificed. The newest dashboards really are quite useful and beautiful.
What you want to know is not just whether people click the button , but whether having a certain feature available changes the way that people actually use your application.
What if we graph this thing over a month? Hmmm, sort of always looks like a straight line for all of our test client datasets, and you can't really gain any insight from it. Let's try something different. etc etc.