For example: if i watch one or two episodes it doesn't necessarily mean i want to continue to watch the show. therefore if you want, you can subscribe to it or dont, so it would show in my progress page and in my calendar

Marking a season of a show, or the whole show itself, as watched will display each of the show's episode on the history page. Imagine that on a show with 200 episode that you had watched previously, for example. You mark this show as watched and then you check your history. You'll have to navigate through a lot of pages that display the show's episodes and it's kind of an unpleasant experience, especially when you want to review your watched history.

When I follow a friend is because I want to know what they watch.
I can go thought the network and find out but it would be nice to have some sort of notification system like facebook that shows what have your friends watched recently that we don't know about.

When you go onto an Actor/Actress profile there should be a progress meter similar to the TV show one where it would tell you how many of the movies you have watched of the actor. This could also include a hide watched function. For example, If I were to go onto Chris Pratt's page it would show that I have watched The Lego Movie and Guardians of the Galaxy. It would also say that I have watched 2 out of 25 things he is in. There could also be another function to filter TV Shows and Movies. Thank you.

Mark show as abandoned (or dropped) when you intentionally stop watching.

I know you declined this for *all* movies and episodes that haven't been released, because you're not sure if the release date is correct, but could you at least disable it for more distant release dates? (not including episodes with missing dates)
If you enable rating about a month before something's released (maybe earlier if that's necessary), you should be able to know if the exact release date is correct, right?

I think that it would be great if you can add quotes of a movie or show you want to remember (something similar seen on seenth.at) or you just simply found something interesting and you want to write it down for yourself (similar to the notes on goodreads)

In profile we have "Favorite movies" and "Favorite TV shows" that show things according to the option, for example I use "Random rated 10" and shows all movies that I rated 10. Would be nice if I could choose my real favorite movie and tv show independent of my ratings.

ps: I'm the worst explaining things and sorry about my english I'm brazilian.

I'd love to see some other media forms (manga, books, video games, etc.) on the site so I can track everything in one spot.

It would be great if more options for sorting could be added (by director, genres....) to watchlist, library, ratings and all other places where you can sort movies and shows. I use my watchlist do decide which movie/show to watch next and library/history to go through movies/shows that I have seen when I want to recommend some of those to friends or family, so those options would make it much easier. Thanks.

It would be great to follow or like people (actors), so trakt can notify me about new movies of this person or use this information to recommend movies with actors I like/follow

Add Seen up to this episode/season button, please, it is a core feature IMHO.

Often times, I don't watch movies or TV shows alone, but with friends. It would be nice, if only one person would check into a movie/show and mark the others. That way you could not only track which shows/movies you have watched, but also with whom.

If you would like to make things more complex, you could link a foursquare profile to your trakt account and check in (movies/shows) those friends who are checked into the same venue as you are. But that's maybe over the top ;)

When browsing the dashboard or home page on trakt, I occasionally find some interesting movies or TV shows that I would like to preview.

I thought it would be neat and convenient if a user can hover over a poster of a movie or TV show, and be able to view a trailer straight from trakt without having to search for it on youtube or through some other media source. Bascially if a user, hovers over the poster and clicks play, a pop out embedded video of the trailer would start playing.

I think it would be great to be able to check in or mark as watched from the progress page. Maybe icons under the Next episode name.

I find myself spending a lot of time on the progress page to find the next episode to watch, and it would save a lot of time if I didn't have to go to the episode page to check in.

kind of like the "neighbours" feature on last.fm, you get suggestions on who to add as a friend (people with similar tv show/movie taste to you) based on the tv shows, episodes and movies you marked as seen.