It would be great if MS flow could support Enterprise level templates:
1. Reusable componennts that can be used across users, specific tenants(even within single tenant, across diffrent departments and can be shared with only specific people)
2. A template that can be developed by IT developer within organization(may be using custom connector or from available connector) and published within organization. A bussiness user can then use this template(possible modify) for his purpose.
3. Role based template i.e depending on the type of user(or role assigned to user) looged in template behaviour may change.
Note: Point 1 is also mentioned in the presentation "Introduction to Microsoft Flow at WPC 2016" (https://www.youtube.com/watch?v=YFm2iPK1BGA, minute 39). Which is the official presentation from MS flow team and was made more than a year ago.