Related, I’d love an editor that’d let me view/edit identifier names in snake_case and save them as camelCase on disk. If anyone knows of such a thing - please let me know!
Sure. Presumably you could have localized source presentation, too.
But, yeah, I think a personalized development environment with all of your preferences preserved and that don't interfere with whatever the upstream standard is would be a nice upgrade.
This is actually possible with glasses-mode in Emacs: https://codelearn.me/2025/02/24/emacs-glasses-mode.html
I think it sees very little usage though.