For those curious, I settled on a modified version of this approach. It occurred to me that there are indicators that I might be arriving home - the garage door opening, the front door unlocking, and so on. So now, I’ve configured the rules to automatically trigger me as being “home” when one of these events occurs, then I send refresh commands to iCloud a couple of times via timers in rules to get up to date location info for everyone, so I can know exactly who is home. This seems to work well without impacting battery life very terribly, since there’s only two of us at my place and it’s not like we have people coming and going all day long.
