After playing with this for a few days, I'm running into a weird usability issue, that's actually very much a "nice problem to have".
My radio can only store 350 contacts (other nodes on the network). Once that's full, new nodes are no longer shown.
That means I can't add them as favorites, or even message them.
The upside of course is that I can reach over 350 nodes, covering half the country.
And a fix is on the way: https://github.com/meshcore-dev/MeshCore/pull/1379