Thankfully, the writing for West Side Story is already great, and it does not sound like Tony Kushner or Steven Spielberg are planning to tamper with it too much.
While that might be cause for concern, there’s reason to believe Tony Kushner delivered a great script.
Ultimately, the foundation of any great story is the writing.
They’re keeping the music in, of course, and the story is said to be similar to what we saw in the original 1961 film.