Odin's death in the movie Thor: Ragnarok managed to give fans just the right amount of hope, ahead of Thor's final battle with his sister Hela. However, a recently revealed deleted scene from the movie shows that if the original plan had been followed, the death could have completely altered the plotline.
In the theatrical version of Thor: Ragnarok, Loki and Thor track down their father after learning his nursing home was destroyed. They find him living peacefully in Norway - though he is rapidly nearing death. Odin is able to find closure with his sons before he passes away naturally.
The deleted scene available in the Infinity Saga box set shows that his death could have been the result of a much more unnerving moment.
The scene still features Thor and Loki, but they find Odin homeless, wandering the streets of New York City. Though he recognises his sons, it is not a peaceful reunion. Odin rambles as he speaks to them, asserting that Asgard is not real and that Ragnarok and Hela are coming. He then transfers his powers to Thor, making him king, but not before giving Thor a glimpse of the impending destruction. And then, as if the whole scene isn’t heartbreaking enough, Hela appears.
She confronts her father, asking him why he kept her work a secret, and he remarks at how cold and brutal she has become. The goddess of death proves him right by stabbing Odin in the chest and killing him. Hela then destroys Mjolnir while Loki and Thor escape.