That certainly provides a standardized interface for solving the problem.
However, if you will notice, the disclaimer states:
Disclaimer
Checkpointing in its current form has not been tested to deal with all recovery scenarios, so it should be used alongside existing recovery infrastructure. module:fabric-network~FileSystemCheckpointer is designed for Proof of Technology projects, so we strongly suggest implementing your own checkpointer using the module:fabric-network~BaseCheckpointer interface.
---- I take that to mean that there is still the same body of work that must be done to implement one of the approaches described in [1] in my first post in this thread.