I don’t want to make any promises but the work we have put into syncing certainly sets up for that future.
We actually did have a basic experience testing internally, but shelved it to focus and wrap up syncing to start. (You would get pushes showing a small list of items that someone else checked off, etc. which I think was a nice implementation compared to other apps.)
It seems with sync-related projects they tend to take longer and turn out to be more complicated than we thought setting out on it, so one step at a time!