Thank you for the feedback! Integrating with Microsoft Teams is certainly on our backlog and we hope to have an integration sometime soon in the future.
+1 Flow and Teams need to work together. I'm sure this comes up a lot.
I'd also like to see flows kickoff flows and I'd like to see enterprise grade flows that persist outside of a user context. Something that can live even if our workflow devs leave the company.
Joel - we will be adding functionality in the near future that will enable admins to take over flows and ensure that even if a dev leaves the company, the flow continues to run.
The Microsoft Teams connector is now available - the connector and its associated templates are visible here: https://flow.microsoft.com/en-us/services/shared_teams/microsoft-teams/