With house of wolves being q2, comet supposedly in September, and other games out between now and then, a 4th character slot would be nice addition to motivate people to stick around. I love the game despite its flaws, but with the common crucible red connections since December, lag switchers, and lack of content, the state of the game leaves much to be desired. A 4th slot would be a great way to extend the life of this game between the above content gaps.