We still have some scripts (python owners) for CLI commands that are incompatible with vyos-configd.
T6481 is just another request for such a feature.
Instead of calling my_set and my_delete binary helpers for the store backend we could create a thin Python wrapper who interacts with the unionfs directly - and without the configsession overhead when spawning the cstore code.
This has proven to work in a PoC where the system_login.py script now uses the new methodology in writing to the unionfs directly.