I had hope we will get a full JSON REST api with 2.5. But the new unstable api still uses value_raw which is a string representation of a python object. That mostly looks like JSON but not always is (e.g. for tuples). Sometimes this can cause real headaches: especially when using the Checkmk ansible collection. Using string for that field is prone to escaping issues and automatic type conversions which may fail.
Is it somewhere on the roadmap to get full JSON objects for the API?