Wireguard sounds intriguing, but it seems to lack one of tinc's main features, which is presenting a fully-reachable network regardless of the underlying connectivity.

I really like being able to roam with my laptop(s) and have my routing table look exactly the same, as opposed to having a "home network" and then having to explicitly "connect to the vpn" when away from it.

With a quick reading, it looks like the Wireguard protocol wouldn't preclude adding this functionality via userspace forwarding daemons on the better-connected hosts. It's just not there right now, especially in the just-works package tinc provides.