What’s the main use case for you or feature with the greatest promise?

It's only been a few days and I am still exploring, but my household has two adults and three kids all with very busy, individual schedules, and one of the nicest features was setting up a morning text message to everyone with reminders for the day. It checks school schedules, test reminders, sports events, doctor's appts (I am in PT), and adds personal context assuming it has access to it (it usually does). I understand much of this probably could have been done for a while, but this seems like the nicest packaged up assistant that I have tried.