Webpack is supposed to be one of those things that you setup and then forget about and is likely not the only piece of bundling / building your application. So except for playing with this, admittedly pretty neat interface, I don't see how this fits in the typical webpack workflow. I'd be curious if they are logging metrics around how frequently it'll be used to see if it's something people are actually interested in or if it'll just be a neat thing everyone checks out once and then never goes back to it.