I like Density. I think the PvP mode in particular is really good, and a blast to play. But, truth be told, it's a little old-school and barebones in terms of gameplay features. So for Density 2, I think Bungie should take a little inspiration from one Activision's other franchises. You know, that little thing called Call of Duty. More specifically, they need to implement perks and killstreaks. Like it or not, perks and killstreaks are a staple of modern video games, much like the dedicated sprint button is. If Bungie wants to be competitive with other AAA franchises, these features must be in the sequel. They add so much to the experience; why do you think other franchises include them? Not only that, but it would a wider, global audience to the series. Who doesn't want more Guardians running around? And it'll make Bungie and Activision a whole lot of money as a result. What do you think?