We have had a small discussion in our own Gamer's Lair on this exact thing. It branches out on a couple of different paths as well.
As for myself, it depends on the scenario in question. Diablo 3 has enacted a legendary 'pity timer' where if you don't get a legendary drop for 2 hours you automatically get one, and that works great in that game for its purposes. For GW2, an increased % chance every time you put in items capable of creating a precursor would go a long way in improving player experience and also keep that 'yay loot' feel to the action.
I was introduced to this song through Scrubs when they played Peter Gabriels version. I looked it up and immediately fell in love with this version in particular. Stripped back lo-fi sound makes it so much more intimate, like this is personally being performed for me in the room just for me. The the vocals have just the slightest sardonic tinge to them, not pointed at the the subject of the song, but inwardly. I love this song. A truly sublime track.
Peter Gabriel's is fine, but it is too self serious and even the small orchestra set it is done with feels overblown in comparison.
This is another strong showing from this stop motion company, though ParaNorman and Coraline were better than Boxtrolls. The movie was a lot of fun and everything was built with the usual care and love these stop motions are made with, making the world feel very real and surreal at the same time. The titular trolls themselves were mildly creepy at first but the human characters, outside of Eggs and Winnie, are far more grotesque and exagerated. I loved that touch because it reflected Eggs' view of the world since he grew up with the trolls. The movie deals lightly with themes such as xenophobia, genocide, social classes, and self determination with varying degrees of effectiveness and subtlety. But when you literally have the elite be 'white hats' it kind of removes all ambiguity. Still, it was a very cute and enjoyable movie that had me thoroughly entertained thoughout.
My only real complaint is that the main character, Eggs, isn't terribly interesting in and of himself. I wanted to see more of him interacting with the Boxtrolls and their eccentric cavern. But that is a small quibble in an otherwise good film.
Go see it if you want a lightly dark childrens film that doesn't look down on its audience.
Option A, simply because a drop is far more exciting than tokens.
But I'd also like to state that the RNG should be weighted with how many times you have attempted to get it, if the item is of mechanical importance to the player (ie stat increase) similar to how DOTA 2 manages proc chances on abilities. This means that the more you do something the higher your chances of getting it are.