I'm currently working on a greenfield project that is a rewrite of a smaller portion of a larger app I worked on several years ago. Normally I wouldn't advocate for a rewrite, but the business has since been re-imagined and vastly simplified. Incidentally, I'm also doing it in Elixir.

Not only do you not suffer from the "blank page", you can are privy to all the mistakes made before. Of course, you're now open to make a bunch of new mistakes, but that's ok—there's still the benefit of tons of knowledge from the original project.

Furthermore, the Elixir ecosystem really helps mitigate that "too many tools" feeling.