You know what I love? Doing world boss pre-events were players sit on their kitten afk until the boss is up, then getting the boss chest at the end even though players like myself do the event and get a disgraceful amount of karma and coin for the extra work we put in. Complete bullkitten. Obviously, this has been around forever, but the fact that Anet introduced the collections for items which are reliant on world boss drops and these lazy players now get a chance at these just pushes it over the top.
I just did the entire dredge commissar event chain by myself and guess what happened? Lazy people sat at the door where he spawns and killed him before I got there because I was unable to get out of combat in enough time. Wonderful job Anet. Reward the lazy kittenes and snuff the players who do all the work in this game.