I would post it in the feedback section as a feature request.
There have been hints that thy are interested in updating (completing) the system bond integration, but as usual, we have no clue on timeline. Otherwise that integration was put out in a basic state and has not been touched since.
Yes the dev from the community app left the community. I think the system app was built new from scratch, it uses a new API. Maybe very loosely based on the old community app. Some people still use the community app due to some devices that work better with it.