- Star vs. The Forces of Evil https://trakt.tv/shows/star-vs-the-forces-of-evil –
Episode count is right but the times are wrong. Every episode is 11 minutes long except for 1x19, 1x24, 2x27, 2x40, 2x41, 3x07, 3x24, 3x37 and 3x38 which are 22 minutes long.
You can confirm on Wikipedia https://en.wikipedia.org/wiki/List_of_Star_vs._the_Forces_of_Evil_episodes (1a is 1x01, 1b is 1x02 and so on; if there is no letter after number, the episode is 22 minutes long).

- Quan Zhi Gao Shou https://trakt.tv/shows/the-king-s-avatar -
The special episodes are the same as the ones in the OVA. They should be removed (the specials). The times are 27, 26 and 28 minutes for the 3 episodes respectively.

- One Piece https://trakt.tv/shows/one-piece -
This one is one of the biggest messes in the entire site…
Why try to break the show into arc and sagas and filler and whatever more at the same time? This is a total mess. Even the episodes are in the wrong place. So,
Option 1 - Sagas:
1. The East Blue Saga - 61 episodes (1 to 61)
2. Alasbasta Saga - 73 episodes (62 to 135)
3. Sky Island Saga - 70 episodes (136 to 206)
4. Water 7 Saga – 118 episodes (207 to 325)
5. Thriller Bark Saga – 58 episodes (326 to 384)
6. The Summit War Saga – 131 episodes (385 to 516)
7. Fishman Island Saga – 57 episodes (517 to 574)
8. Dressrosa Saga – 171 episodes (575 to 746)
9. Whole Cake Island Saga – xxx episodes (747 to ---)
10. Wano Country Saga – xxx episodes (--- to ---)
Option 2 - Arcs:
1. The East Blue Saga – 61 episodes (1 to 61)
2. Whiskey Peak Arc – 15 episodes (62 to 77)
3. Drum Island Arc – 13 episodes (78 to 91)
4. Alabasta Arc – 43 episodes (92 to 135)
5. Skypiea Arc – 70 episodes (136 to 206)
6. Long Ring Long Land Arc – 21 episodes (207 to 228)
7. Water 7 Arc – 34 episodes (229 to 263)
8. Enies Lobby Arc – 61 episodes (264 to 325)
9. Ice Hunter Arc – 10 episodes (326 to 336)
10. Thriller Bark Arc – 47 episodes (337 to 384)
11. Sabaody Arc – 22 episodes (385 to 407)
12. Amazon Lily Arc – 9 episodes (408 to 417)
13. Impel Down Arc – 38 episodes (418 to 456)
14. Marineford Arc – 59 episodes (457 to 516)
15. Fishman Island Arc – 57 episodes (517 to 574)
16. Punk Hazard Arc – 53 episodes (575 to 628)
17. Dressrosa Arc – 117 episodes (629 to 746)
18. Zou Arc – 35 episodes (747 to 782)
19. Whole Cake Island Arc – xxx episodes (783 to current)
20. Reverie Arc – xx episodes (xxx to xxx)
21. Wano Country Arc – xxx episodes (xxx to xxx)

Thank you for your time.

Justin Nemeth (Founder, trakt) commented · December 16, 2016 19:17
I fixe the 1st and 3rd, need to figure out the sherlock one since it has so many plays on it. It's somewhat of a "special" case since its not a normal episode of the show and does truly seem like a standalone movie.

https://trakt.tv/movies/sherlock-the-abominable-bride-2016
https://trakt.tv/shows/sherlock/seasons/0/episodes/9
(Sherlock: Specials _ Special 9 The Abominable Bride)

Wikipédia :

"Special (2016)
On 2 July 2014, it was announced there would be a special episode broadcast between the third and fourth series.
....
Moffat confirmed the episode is set in Victorian London, saying, "The special is its own thing. We wouldn't have done the story we're doing, and the way we're doing it, if we didn't have this special. It's not part of the run of three episodes. So we had this to do it … It's kind of in its own little bubble.
In October 2015, the title of the episode was announced as "The Abominable Bride". It was broadcast on 1 January 2016 at 9:00 pm local time on BBC One in the UK, and on PBS in the US
The episode was simulcast in British cinemas on 1 January, and was shown on 5 and 6 January 2016 in selected cinemas throughout the US"

I was thinking about a function where you could (when checking in) to tag someone who's listed as one of your friends. This way would save time when two or more persons that have trakt account watch something together. I say that based on my own experience, when I'm with friends and everyone stops to check in. what would be easier if only one could do that and tagging the other. Of course, that would mean that would have to implement too some kind of mechanism where you would allow some people to tag you and later you could just allow that, or some thing of the kind, I don't know. :) I talked to some friends who have trakt and they really enjoyed the idea. Think about :)