Same for me and I felt the same in Before the storm (that seemed a lot more rushed to be finished fast by the developers).
Basically, with my friends we take existing elements and try to explore which choices the character could have done if we players really have full freedom.
It changes the relations, the future of the characters etc. For example, in the hitman AU, Chloe doesn't "have to die" in Life is strange to avoid the tempest. Her personality turned colder and she adopted some of Damon's attitudes and replicates some of his patterns. she still mourns when it comes to Rachel but wasn't as attached to her as in the official game because of her training constantly to basically become Damon's successor.
After we finished the game (for the first rp, i had only watched walkthrough to know before the storm story), my friend wanted to try something else. Since Damon is hitting on Chloe in the game, she wanted to pair them romantically (which could not happen before the Life is strange timeline given Chloe's age in before the storm). So we had to find a logical way to not have him killed and to have him not being arrested or anything. but this also changes the places where events take place in life is strange since some places still belong to him and not to sean prescott. in the same way, it means chloe doesn't live under joyce's roof. in fact the most interesting is to change major choices but to keep the whole thing coherent.