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 :/...

As of right now you can mark a item as collected with one type of metadata bluray/dvd/digtal ect.
Myself I have multiple editions of a movie like a bluray and a dvd or bluray and digital copy or all of the above.
It would be nice to either be able to mark a movie/tv show/episode as collected more than once.
Like watch history with a view all button and the best quality shown on the main page.
Or be able to select more than one option under format.
I personally prefer the former because it represents what is an entirely different copy.

Hope this makes sense.

I have this as VIP since this is a little more complex but it would work fine non-VIP as well.

What I was thinking was that when you pull up a show's main page, it will show an estimate of when you will ether catch up or finish watching the show.

Here is an example of the math for it to work.... at least I think it works. But it should give you a general idea of how it may function.

Key:
b = Average time between episode plays for that show.
x = Time since last played episode for that show.
r = number of remaining episodes in that show.
l = length of unwatched episodes(22 minutes, 44 minutes, etc.).
u = time till next un-aired episode date(if there is any unaired episodes).
T = Time till you are caught up/completed with the show

#1. (b+x) ÷ 2 = A

You are adding the average time between episodes to the time since the last payed episode and averaging.

#2. r(A) + r(l) = m

You are then multiplying that average time by the number of remaining episodes. Then multiplying the length of the unwatched episodes by the number of remaining episodes and adding those two numbers together to get m.

#3. If m < u then m = T

If m is a date/time sooner than the time till the next unaired episode date/time(u) then m is the Catch up/Complete date/time that is displayed.

#4. If there are no unaired episodes left then m = Time til you are caught up/completed. (m = T)

#5. If m > u then repeat #2 with r = r + # of unaired episodes m is later than.

If m is a later date/time than unaired episodes' air date/time(u) then repeat step #2 with the number of unaired episodes that m is later than being added to the number of remaining episodes(r).

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I hope this makes sense, if it doesn't please ask and I will elaborate if I can.

Hello
I have small idea - special page in profile, where user can observe they milestones for using trakt.tv.
Milestones would be like:
- watched 100 episodes,
- watched 1000 episodes,
- watched 150 movies,
- watched 30 comedies,
- watched whole [eg. Marvel Cinematic Universe] list,
- spend 100 hours watching shows,
- spend one month watching tv shows,
- started watching [eg. The Big Bang Theory]
- finished series: [eg. Strike Back]
- created first list,
- added 100 items to Watchlist,
- friended 10 users,
- had VIP account for 6 months.

It could be also place for some Easter Eggs, eg:
- watched Hobbit before watching Lord Of the Rings,
- girlfrieend make you watched whole Twilight series

It could be nice place to connect with social media - twitter/facebook to allow users to share they milestone (personally I think that some people would be more interested to share milestones than single episodes - more shares - more people will hear about Trakt).

It could be VIP feature.
Of course it would be quite big feature, but I think that basic milestones (like in first section) could be done quite simple.

Greeting
Piotrek - franiis
(sorry for bad English)