So...now what? (Spoilers)

Thought I'd try Reddit as a means of hopefully, strengthening my love for Skyrim! My character's decisions are, for the most part, based off the choices I would make in real life (aside from the Dark Brotherhood and Daedric Quests), and I'm huge into collecting at least one of everything in Skyrim. I'm a member, on my main account (Nord male), of the Companions, Dark Brotherhood, Thieves Guild, Mages College, and Bard's College. I've completed the main quest line, collected all the Daedric Artifacts, collected all the Stones of Barenziah, discovered just about every location in the game, found all the dragon priest masks, all shouts but the final word for Disarm unlocked, completed countless side/miscellaneous quests, unlocked all trophies, got married, and I defeated the Stormcloaks. Basically, I have no clue what I can do now, seeing as i've come this far. I also made another account in order to create a vampire character for the upcoming Dawnguard DLC (Dark Elf (male), currently only a member of the Dark Brotherhood). If anyone has any ideas how I might be able to keep the game going please feel free to throw out suggestions. (PS3)