What if we tried to create a movie script together!

Yes, 100% it will turn out worse than "Lord of the Rings" and similar works. The idea is good, but there's no need to make such grand statements. The interesting question is whether the concept will be readable. You might have a great idea, but implementing it will be problematic. We all understand here that we shouldn't expect too much from such authors. You can write a more or less interesting story, but you won't be able to achieve anything extraordinary. By the way, there's a topic called "Heroes - not just a game, but also a book," you should check it out.