I actually find the same issue with prequels, especially for the ones that really hit a chord (like the original Star Wars). After knowing what is going to happ

I actually find the same issue with prequels, especially for the ones that really hit a chord (like the original Star Wars). After knowing what is going to happen in those stories, I just can't get invested in a character who I know either makes it for sure, dies before getting to the "main" story, or doesn't matter because they don't have any connection to my canon of the plot arc. Same-universe spins-offs fit this for me as well. OTOH, lots of games come with DLC that add new stories with the same mechanics. There might be some additions or changes, but if you really like the mechanics, you can try it with a different plot. Remnant II has sucked a ton of my time because of that.