I’ve been a long time org user and am slowly starting to move bits of my workflow out of it to ease collaboration with the staff I’m planning to hire in the next couple months. I absolutely love Org and am not particularly happy about moving away from it, but... it seems like trying to use it in a collaborative way is not going to go well. I’ll keep using it for myself though because it’s awesome :D
Well, you can, if you export your issues. Jira has a well working API. It's not hard to write a script for fetching your stuff locally. There are even one or two plugins on melpa for loading it directly into org-mode.
Running `grep` from the root of my Org directory gives me access to about 10 years of notes from various projects across various organizations. In hindsight, I could have tried to periodically dump things out of my clients' various project management systems for historical reference, but just using Org on its own has proven pretty effective at that :)
Could collaboration be done using a public git repository?
Forgetting to commit and push my notes before switching from my Mac laptop to my Linux laptop would be pretty disappointing, compared to them magically showing up. On the other hand, if I had multiple people working on the same set of org files in Dropbox, I suspect Dropbox would start having trouble with conflicts pretty quickly.
And... unfortunately... it seems unlikely that someone I'm going to hire is going to be on-board with project management in Emacs. While I'd love to have an army of Emacs lovers working for me, that seems unrealistic to expect :)
In my experience, one does actually just edit text files using org-mode. It is different than the Tasks sub-application of Thunderbird/Lightening, for instance.