I've recently changed the penalty box timeouts depending on circumstance. "Forbidden" for example won't be retried for 86400 seconds. It still probably needs more refinement.

If mobile phones simply can't be full-fledged clients under the gossip model (and I don't know to what extent that is actually true), then there is a case for a client proxy that they offload to. Now we can talk about the architecture of such a thing and how it differs from an aggregating relay, and what exactly Relayable is... I think a client proxy should operate under the gossip model finding the relays to search on behalf of the actual clients, and the clients can do their simple configuration connecting to 3 or 4 of these proxy clients not needing to use the gossip model themselves.

I'm less interested in this model for the same reason I'm not terribly interested in custodial bitcoin... you can do it, but don't complain to me if you lose all your money or when you configure just one client proxy and it happens to be down.