All I know is that Bungie stated your character is constant across singleplayer and multiplayer and there are three "hoppers" with which we can connect to multiplayer: Strike, Raid, and Faction Wars. Things may have changed since then but for now that's all I got. What I'd like to see is a different style of multiplayer than what Bungie has done in the past. I've never been one for separate singleplayer and multiplayer, I'd prefer they were integrated somehow. For sure with community events and such the cooperative multiplayer is integrated, but I'd like to see some kind of PVP element integrated as well. Not sure how though other than designated PVP zones, but then there's no risk involved because people would just avoid those zones.