Sometimes something weird happens during the production of a show, and the episodes end up airing in an order other than the official one. (Firefly, Steven Universe, etc.)
This becomes a problem when your files are in the official, correct order; the databases nearly always use the airing order.
This could be essentially solved with two small features.
1: Allow "Fix Incorrect Match" to be used on individual episodes.
2: Add episode number to metadata fields, allowing it to be manually edited.
And on a related note, "specials" should be able to be included in seasons somehow, as normal premiere and finale episodes are often incorrectly labeled as "specials", causing the entire season's metadata to be bumped over by one or two. (Each episode has the metadata of the one next to it.)