What if

When I was young I always used to love to read the What If comic by Marvel. When I try to write stories I always see so many different ways they could go with those characters. This led me to think if other people were the same. If they would read a story with the same plot but the story itself turns out completely different.

So, I am wondering how people feel about alternative versions of stories. The major plot would be the same, but some change in an event causes a butterfly effect to ripple throughout the rest of the story. All the characters will have the same personalities but that small change makes the story entirely different.