Probably not exactly similar to what Stripe did but I recently released a tool for creating demos http://www.castbin.com/ http://www.castbin.com/ Would like to

Probably not exactly similar to what Stripe did but I recently released a tool for creating demos http://www.castbin.com/ http://www.castbin.com/ Would like to get feedback on what you really liked about Stripe experience and how to improve Castbin.