I'd love to switch to helix from emacs - I really like the editing model when I have tried it. However I write a lot of clojure and the lack of a REPL in helix and reliance on using LSP for everything (which just isn't as good as repl integration) is a bit of a blocker. I hope their plugin system and embracing scheme for it means that some kind of REPL capability will be implemented and supported well. I hope that plugin branch is merged soon.