Indenting multiple rows by dragging gets complex and I want to make sure it is stable across the various browsers before I push that feature. For now, it's pretty easy to select rows and copy/cut paste them. I use that feature all the time (with keyboard shortcuts mostly).
As of right now, sharing allows others to only view, not edit.
Indenting works for multiple rows at once, but moving them up/down does not. This would be a key feature for reorganizing nested outline sections.
Also, since I just used the demo, does sharing allow others to edit or only to view?