Feature summary:
My experience with Wikimedia Enterprise is as a community member using public https://dumps.wikimedia.org/other/enterprise_html/.
I like the JSON format and contents of HTML dump. It is simple yet useful and contains various useful things. What I would like is that there would be a public API endpoint (or Mediawiki special page) which would return same JSON for an individual article. I think Enterprise has a pull API endpoint for this purpose. But I think it would be nice to be able also for general public to get data of an article in this way. From my understanding all data in the JSON is already available from multiple existing API endpoints but one would have to manually combine them into what this JSON provides. So having this JSON API endpoint would make this simpler and also make less load on Wikipedia servers if one would manually be building JSON through multiple API requests.
Use case(s):
Use case is when one wants contents of a single article/revision but in the same useful JSON format as what HTML dump provides. Sometimes one does not need data of all articles. Moreover, it is hard to find only one article in the whole dump (there is currently no index file provided for the dump).
Benefits:
Having API providing data in same JSON format means that same tools to process this JSON format can be used both for processing HTML dump and also individual articles. Moreover, having an API can improve chances that consistent format/structure/data is being provided (having to have another code path to reconstruct this data using other API endpoints might introduce slight differences).