You're going to love this idea. Ok, so we're human, right? We have 24 hours in a day, 9 of those are spent working, and we get about 2 to watch a movie or some TV. We've all got way too many movies on each of our Watchlists, and many us, by the time we get around to watching some of these movies we added to our Watchlist, we've totally forgotten why we added the movie to it in the first place (why we were interested), especially when you added it for some reason like, a friend recommended it to you, or it's by a certain director you've heard was good, etc.

So my feature idea would be: let us associate a little note with the action of adding an item to our Watchlist. And make it easy to see that note while we're browsing the Watchlist. It'll help jog our memory why we were interested in watching the movie.

I don't think anyone has ever done this.

I honestly don't even know if I'm describing this correctly but I shall try. I don't always watch shows from the first episode, especially if watching on TV. For the past month, when I check into a show that I have watched previously, if I check into an episode that aired BEFORE the episode I just checked into, it always shows the episode AFTER the one I checked into long before.

For example: I checked into The Andy Griffith Show episode 8x24 then started watching the show again from Season 1 and checked into episode 1x01 but my Recently Watched On Deck still shows 8x25 is the next episode I'm supposed to watch meaning I have to check on the episode, go back to Season 1 and pick the episode from there. It will constantly show 8x25 as the next episode to watch until I get to that episode which is about 200 episodes away.

Another example is The Great British Bake-off. I previously watched Season 5 but my PBS is now showing Season 4 so I checked into episode 4x01 but my On Deck is showing the next episode I need to watch is 5x11.

Example:
Deck shows: http://i.imgur.com/4Z9Ik0m.jpg
Recently Watched shows: http://i.imgur.com/u99FtT7.jpg

In my opinion, it would be much easier to use the Recently Watched On Deck section if it would always show the next episode (if it has already aired) that comes after the one you've recently watched/marked and newest one you've watched from whatever season is newer. Especially if it's a daily show like a news program, soap, or talk show that some people don't watch every episode of, but watch on a semi-regular basis.

A good amount of shows have canonical versions of their episodes uploaded on YouTube.

It'd be useful if there was a way to "link" episodes with those specific YouTube videos.

This unique video ID (the part after /watch?v=) would ideally be exposed through the backend for API clients. As for the website, instead of embedding the video, a simple link would be fine since I don't think you guys are interested in turning Trakt into a viewing platform.

The reason I'm interested in this is, it's always been a hassle to keep track of your subscriptions and the content you care about on YouTube. It's a big mess. And with the introduction of YouTube original shows, serialized content is only going to grow from here. This change will enable devs to create browser extensions that implement Trakt directly onto the YouTube interface, allowing people to scrobble and track a lot more shows automatically. It will also potentially bring thousands more users to Trakt.

The implementation would be as straightforward as adding a database field for the YouTube video ID. Of course you do have to update the interface and the API endpoints to support the new field.

Some example links:
https://trakt.tv/shows/h3h3productions/seasons/2016/episodes/11 -> https://www.youtube.com/watch?v=RMICTAl4LCg
https://trakt.tv/shows/open-haus/seasons/2016/episodes/32 -> https://www.youtube.com/watch?v=xmHklWqagKc
https://trakt.tv/shows/on-the-spot-2014/seasons/6/episodes/6 -> https://www.youtube.com/watch?v=-1NVV7ufTNE