I have seen use cases where an organisation has its authoritative web and database connections stored in Flow and wants to make those accessible to Form users. However, they don’t want Form users to subsequently be able to overwrite or upload their own connections to Flow in an effort to keep it organised and structured.
They achieve this by restricting access to the database and web connections to read/view only. Therefore allowing them to be used in Form and Flow, but not changed.
However as Form is now set to use Flow as it’s connection storage, a user can’t create their own as their associated Flow permissions block writing to the connection storage.
It would be helpful if you could have both a local and Flow connection storage configured, with the ability to copy between them.
This is similar to some ideas in:

