Just to touch up on http://support.trakt.tv/forums/188762-general/suggestions/11258295-schedule-movie-refreshes and other things regarding the data refresh. Tbh I have seen little improvement regarding data quality on the site. Really sucks hard that any upcoming movie or newly airing show has a big chance of being "incomplete" or running with subpar artwork. There really needs an additional update job besides the update time on their respective source for the refresh.

(from the "new show calendar")
https://trakt.tv/shows/the-virtues only had a backdrop but posters uploaded over two weeks as well as two days ago
https://trakt.tv/shows/funniest-ever-tv-cock-ups also blank
https://trakt.tv/shows/love-beyond-frontier-2019 has had a non-English "English" poster since Nov 2018...
https://www.thetvdb.com/series/terrace-house-tokyo-2019 same

(stale artwork - at least the image there is gets grabbed at least the one time)
https://trakt.tv/movies/brightburn-2019
https://trakt.tv/movies/the-informer-2019

Also there is still no language fallback for artwork that isn't "English"... there are enough instances where the original language is sufficient for "English" too... and everything is better than blank images. I have been uploading images to the wrong language on TVDB for well over two years now just so that trakt grabs them (or whenever I last requested this)... really would love to stop doing this.

Trakt relies a lot on TVDB for shows. Sometimes TVDB has duplicates which eventually get fixed. But when that happens, these dupes are still available on Trakt.

I suggest coming up with a notification system that warns when a show has a TVDB entry disappear. Who would get notified? Well, mostly you guys, since you're the ones with the ability to remove dupes. Maybe you could also add a warning on the show page that the TVDB entry is gone and that Trakt admins are investigating.

This might cut down on dupes and the constant reports about them.

Note: this implies that shows on Trakt auto-refresh periodically, otherwise the disappearance of a TVDB entry will never be noticed. I assume that is the case.

For a while now different developers or even individual users have been creating ginormous lists with thousands of items but with only three featured on each entry these tend to block everything out since they are also more likely to reach someone else that might throw them a like. Are there any plans to deal with this? Can we hide, re-categorize (non-personal) or downvote lists against this? Some of these serve no purpose other than actually bypassing advanced filters I'd argue or being pinned on kodi dashboards on dubious box setups I'd say...

Here are some examples of this:
https://trakt.tv/users/theultimatec0der/lists (one of his "all shows" has 50K items...)
https://trakt.tv/users/dborg/lists (I think his biggest is gone which was the thousands of "MOVIES NOT INTERESTED IN WATCHING)
https://trakt.tv/users/enormoz/lists
https://trakt.tv/users/zapras/lists/rarbg
https://trakt.tv/users/chas3down/lists/drunk
https://trakt.tv/users/fexi/lists/all-movies-with-german-audio
https://trakt.tv/users/opposite_lock/lists/15-18

Didn't find anything specific in the search but I was certain I saw mentions of this in the past too.

I love trakt. And I love TMDB. I contribute a lot to TMDB and think it is much better of a site and a community and more user friendly than TVDB. I understand that TVDB probably has a more comprehensive database for series compared to TMDB (I think TV shows are only a fairly recent addition to TMDB). However, contributing to TVDB is much more arduous than to TMDB, especially when it comes to getting incorrect data changed. The TVDB forum is fairly dead and slow to respond, me as a user have no idea if they keep track of our contributions.

Anyway, is there any reason why Trakt doesn't use episode information (especially air dates) from TMDB if they don't exist on it's respective entry on TVDB? Could this happen (any time soon- i.e. in the next couple of years)?

I don't do regular housekeeping of my trakt data and things are prone to get messy due to various bugs in apps and plugins but I'll always end up with duplicate plays at some point. Many of those end up going from check-ins to plays at the same timestamp which shouldn't get accepted as valid by the site at all imho or at least end up getting merged. Despite not not being advertised outside of some support threads and a single kodi forum thread I end up getting a lot of visitors on my duplicate removal script (500+ last year) which tells me this is quite a common issue and affects plenty of people :/...

I like to mark episodes as watched with the release date, for aesthetic and personal reasons, but episodes from Netflix shows and episodes that aired in the same day (like the Friends finale) have the exact same date, which results in my history being messed up, because it shows that the last episode I watched was the first episode of the season (or the first episode of the two aired episodes in the case of Friends).

So why not sort the episodes in descending order by number after sorting by date? I don't see any reason for this not to be implemented and it should be fairly simple to do it.