Why he might be dead: If you want to talk about a beloved character, look no further than Daryl Dixon (a.k.a. Rick's right-hand man). When people started whispering that Daryl could potentially be the one to ride into Oblivion on a wave of barbed wire in the finale, fans were immediately up in arms, even starting Facebook groups dedicated to his survival. In the new video, one of the first things you see when the camera zooms in on the ground is a gray blanket, which looks an awful lot like the one Daryl is wearing while the group kneels in front of Negan. Combine the rabid love for Daryl with the same reasons above, and you'll have a pretty strong case for his death.
Why he might not be dead: At this point, the only way we could see Daryl living is if Glenn takes his place. And if Maggie lives, why would she throw her engagement ring on his remains?