Thanks for sharing.
For now, I ended up using a script (see here) for integrating life 360 directly in HASS. It is currently the best tracker I’ve used, so I can live with only having a badge for this single tracker, and using a life360/nmap in the background for automation.
It would still be nice if you could customize badges with that little banner, so you can use icon/picture in the badge and still have some info shown.