It would also be productive, I think, for them to publish a formal OpenAPI spec for the HTTP API. It wouldn’t be too hard to create a syntax def from that, I would think since:
Starting from RouterOS v7.1beta4, it is implemented as a JSON wrapper interface of the console API.
https://help.mikrotik.com/docs/spaces/ROS/pages/47579162/REST+API
Request for OpenAPI spec was made 4 years ago:
http://forum.mikrotik.com/t/feature-request-openapi-for-rest-api/149360/1
Third-party schema is downloadable here:
https://tikoci.github.io/restraml/#Schema+Downloads