I was watching a JSConf EU talk today about performance and empathy https://www.youtube.com/watch?v=uIBYN6w9cBc&list=PL37ZVnwpeshHwJPVBqEnZild7QHWhdufu. In it the speaker mentioned 2 tools for helping.
The first was a feature of Google’s Lighthouse called Stack Packs. It can make suggestions based on the framework you’re using for how to better optimize your website. Currently it only supports Wordpress, but they plan on adding more and I think Elm would be a nice addition. The github page is https://github.com/GoogleChrome/lighthouse-stack-packs.
The other tool mentioned is web.dev. This site has literature and videos on everything from accessibility to security and more. They’ve begun adding a section on frameworks with React being the first. The github page for this is https://github.com/GoogleChrome/web.dev.
I think these are both things that the elm community would benefit from.