I would love to see instant reload work with any theme file, not just a file that is a CSS file.
For example, when building theme files in PHP, on save, it would be great to see these update in realtime.
I definitely understand that this can be an issue with breaking WP if there are syntax issues but when building custom themes, or building custom plugins, the ability to have updates on JS save or PHP save is much more valuable. Currently, I don’t use the live server in LOCAL. I use it in VSCode and then basically use local as a git manager. It would be cool to be able to just use Local for everything.