I love org-mode but I do have to say that not having a nice way to collaborate on it is a hindrance.
We really need something that's like etherpad or Collabora but able to use org-mode files. Otherwise I'll eventually need to switch. But since nothing else is better, I have no idea what I'd switch to!
I realize I made this same complaint not too long ago, but it comes up each time my partner and I want to discuss planning. Org-mode is awesome for my tasks, but the minute we need to share between us and make plans, we can't.