As title, due to inadequacy of router configuration using web browser, could you please implement the function of export/import router settings using JSON or XML.

That should be easily to implement by export/import setting file to TP-Link server to deploy to the router for advanced user, not necessary to modify the router firmware. Users can be easily backup setting in different versions, simply config in plain text and add a large number of reserved IP addresses, ports forwarding, and static routes to the router. Also, users easily for migrate/upgrade with new routers.