It would be a really great feature to have an API Endpoint to fetch just one episode from the Database from a series, using a TVDB Episode ID, it would save me a for loop inside a for loop action to find the corresponding episode from TVMaze.
I wouldn't mind adding such a function to the API. But right now we don't have this data available in a sufficient quality level. In case there's a conflict between the season/episode numbering scheme on TVmaze vs tvdb, the ID's would have to be verified manually. That's an enormous task which is probably a bit too much for right now.