So MCEbuddy is using the various metadata services to figure out how to rename the file in the first place, and those include whether it is a movie or a TV show, so differentiating should be hard. As for the GUI, it is just having to have two different rename strings. If the use case turns out to be only TV and movies, then it is pretty simple to just have the option to differentiate between the two and have the two rename strings. And if the field is missing for some recording, it won't be any different than if the season info is missing for a TV show, and you end up with the show being placed in some odd directory (like just "Season" instead of "Season03").
Now if we want to go all out, the renaming section could be a whole language unto itself and have conditionals based on the various meta data pieces, but I think that is probably over the top for the functionality needed :-)