It doesn't make sense to replace Rails views completely in my view. There are parts of the app that are still being served by Rails views because they are not mission critical or have a great solution already in-place. Where React comes handy is when you have an interactive one-page app with a lot of moving parts. I have 2-3 React apps in this current project. Webpack is a great solution for packaging your css, js and other assets in logical units. I think it's much better than Sprockets, but it requires some configuration.