Support Alternate Order / Flexible Seasons (TVDB) [implemented] and Episode Groups (TMDB) [open]

So I have created a separate Feature suggestion for the ability to Manually sort using the .plexmatch file. It would be a workaround for this problem, but I feel it would give more flexibility & would be able to accomplish most of what is wanted here, just with some more leg work. It would also give us the ability to sort however we want, provided we do the work ourselves to make it so.

For anyone who doesn’t know the new .plexmatch Hinting system came out recently to help match properly odd naming systems. An example I can give that makes this useful is the series 3x3 Eyes. With that series episodes being named: 3x3 eyes S01E01.mp4, 3x3 eyes S01E02.mp4, 3x3 eyes S01E03.mp4, etc a couple years ago stopped matching the episodes & instead sees the 3x3 & ignores everything after & makes each episode a different version of Season 3 Episode 3. I had to rename each episode to ThreeXThree Eyes to make it work. But then after an update that again mixed then together, then a later update fixed it again. So the .plexmatch file gives you the ability to give Plex “Hints” as to what file goes where.
My suggestion is to give the option to either have an EpisodeID from TVdb to manually match to an episode but have it exist elsewhere. or Have a SortTo option to change where it sits within the Show.
I give 2 suggestions as to possible structure format & I’d really like to hear what others who might have a use for it would think so that hopefully we can have the best suggestion so if it happens we have it as useful as possible.

The 2 possibilities I have are: (Using the sample of having the Serenity movie of Firefly show as a second Season)

# The 2nd season is the movie Serenity (2005) which is also episode S00E01 of the show
# Using the EpisodeID Hint
TVDBepisodeID: 415679: /Season 2 - Serenity/Serenity (2005) S02E01.mkv

# Using the SortTo Hint
ep: S00E01: SortTo: S02E01: /Season 2 - Serenity/Serenity (2005) S00E01.mkv

Is there one of those, or an alternative that people here would find more appealing?