So something similar to what Neovim is doing where it can be a headless backend for any editor that implements their protocol? Like eventually if JetBrains bothers, you wont need a VIM emulator for IntelliJ and co, you can just run Neovim and have it work with IntelliJ directly, without losing any of IntelliJ's benefits. Note: I also mean PyCharm, GoLand, and so on...

Neovim literally has like over 30 projects for new UIs:

https://github.com/neovim/neovim/wiki/Related-projects