The truly pluggable editor is emacs. I too spent months trying out neovim, then emacs, then finding helix. Spent a year on helix, then zed because I would rather have something more complete, and brought with me all i could of helix modal editing.

But emacs. Emacs is the one that can truly become anything you like. And with lsp and treesitter being finally in it. I've finally came to my senses and started building my helix in it.

I wish some radical team just says fuck yes, we're gonna make Emacs fast and actually accomplishes it.

It's definitely easier with LLMs now, but still considerably hard.