Is Qlik looking into this or not? It's a giant oversight not to be able to refresh storytelling data all in one press of a button or per each individual snapshot.
Watch for an update to Qlik Cloud this week to support subscriptions to sheets with output to Powerpoint. This offers a slight variant to refreshable stories that customers have shared.
I had this requirement today within my organization and unfortunately this feature is still not available (Or maybe I am unaware if this is now available).
I hope we get it as this would be a perfect fit for our requirement.