That would probably work. Not sure if one actually exists though.

It very much does and has for a while now: https://samteplov.com/uploads/who-tracks-the-trackers/tracke...

Using randomized or rolling addresses avoids detection to an extent, depending on how many randomized addresses one uses and how often they're rotated.

However, it's also trivial to detect randomized (or rolling) addresses due to the address being utilized for more than a single locality. Although, I'm not sure that either Apple or Google is actually doing the randomized detection even with this new patch.

And also modulate transmit power as RSSI is often used for distance and movement calculation.