Tasmota: grouping devices (mqtt) and failover to esp-now

I am currently thinking of wiring up three way switches with sonoff touches, and any of the ways I want to do it involve one having a relay output to the light and one having a publish that causes the other one to toggle states. While spitballing about why I am ok with this at my hackerspace but not at my house I had a thought. I very, very much want my light switches to failover to exactly as useful as they are now (just dumb switches) if the wifi and/or internet goes out. MQTT has handled the internet problem by doing everything locally, but if the broker goes down or the wifi itself is down then only one of the switches will function. In order to handle the situation that I would like to failover gracefully, the modules would get something like a group ID and when wifi is lost for some amount of time they fail over to their respective groups using either ESP-NOW or a sort of mesh or ad-hoc mode which allows them to function without a functional access point or broker, both just need power and to be in range of each other.

What do you think? should there be more integrated support for essentially wireless three way switches?
I know how I think it's done now by setting the report topic as the control for the other one that's subscribed but that does not translate well to an automatic ad-hoc link.