I'm assuming there will be a full set of daedric shrine quests as in previous games. So it would make sense to have a quest for Lord Dagon as he's probably desperate for a follower or two and trying to save face with the other princes. Does anyone else think it would be wonderful to have this tie in to oblivion, maybe recovering an artifact belonging to the hero of Kvatch. This could have some lore associated just like the oblivion references to the Nerevarine, "Then the Champion of Cyrodiil headed north to the land of the Nords.......". I think it would be an amusing irony to help out the last games arch enemy. Anyone agree?

I think Mehrune's Razor could possible be a reward from Dagon.

Being Mehrunes Dagon and Alduin have historically not been on the best of terms, I consider it possible that Dagon will be helpful even if it is simply in the capacity of "do my quest and I'll give you a kick-ass weapon."

Probably see some references of Dagon, but probably nothing straight forward like a quest dedicated to him. Its possible though

I'm hoping for a Jyggalag reference

Amen to that. The Wabbajack is his by rights though he'd probably want it returned/put out of action rather than handing it to an adventurer to spread mischief.

The idea of Dagon helping you would actually be really interesting, especially since he so one dimensional in Oblivion "Crush, Burn" bliviongate: I hope Bethesda expands on this.