At least one Lost death makes sense.
Shannon died, chasing Walt into Ana Lucia's gunfire. In Smokey's long con, it makes sense that he would lure Shannon into danger so that Sayid would be that much more vulnerable down the line.
Oh, and one guess at a spoiler:
Perhaps Frank is alive since he was not listed in the thirty dead folks in EW.com today. Lots more ambiguity about that one. All I can say is that if a surge of water can shoot a sub-door/hatch into a guy, the guy should be dead. But, if we do not see the corpse, it does not count, I suppose. We shall see soon enough.