Unnecessary deaths? (Spoilers)
So I've just finished this and great as it was I have a slight niggle around the death of Michael which also started making me think about a few others and whether it was a deliberate theme.
Starting with Michael - We know his suicide was precipitated by the visit of future Jonas / Claudia and they came to the realisation it had to happen and in fact Jonas' arrival planted the seed. However what actual difference to the loop would his survival have made? The initial trip to the tunnel was a result of Erik's disappearance and looking for his hidden drug stash. The group of kids were already an established group friends, would have made the same journey - with Mikkel in tow - that evening. Michael's suicide, or not, months before seemingly has no impact on this event. So why must he die?