Interesting. If there is a workable org-mode replacement that gets org-agenda I would consider switching away from Emacs to Vim or Neovim. I'm sick of using such slow and crash prone software. (Emacs is much better on Linux. I would love to use Linux as my daily driver but it's just not an option.) Since I've switched to Spacemacs it wouldn't be hard to port my small tweaks to recreate my personal preferences. But I really can't give up org-mode!