One of the use cases would be: In Microsoft Flow, adaptive card conent will be generated if an Approval is created. IIt would be great to show the content of adaptive card in PowerApps so that users can make the approval directly in PowerApps.
This would be so usefull !
An app that could leverage this could be a centralized app for an organization to link to all the other apps. Instead of opening all of the other apps to perform an action for a process, open your phone and pull up an app that just uses these cards to perform a majority of the actions for approvals, setting time/dates for things, so many uses! Sounds like a sweet idea!