yea, I especially loved the last Protoss one
where all the heroes make a last stand, but does that mean the Protoss expansion will have to have new heroes? or was that just the vision of the overmind of what could happen if Kerrigan doesn't set the zerg free?
That was a flash-forward; a vision of the future if nothing changes. During that scenario, the terrans were all dead, and the bad guy made comments like "Dude, you're so stupid; Kerrigan could have saved you, but you ALREADY KILLED HER." Obviously, in the current time she's not dead yet, so it's a "potential ending"