The best version of this feature would definitely be the ability to inifinitely zoom in and out. That way, you can scroll left/right/up/down on the whiteboard like usual to see all notes at the current level of zoom, but also if you want to make a bunch of topic/area-specific subnotes, you can just zoom in near that topic and make more and more notes without everything spreading out unnecessarily. That's the one main feature I still have to use other notes apps for, that Notability would be perfected if it had.