I am running WG on the OpenWRT router:
- The attack surface of a WG server is minimal (look into its architecture)
- Gives me remote access to the LAN (occasionally helpful)
- Simplifies firewalling and saves me from port forwarding
- One less thing to fail on the HA machine
- Somewhat random: my router has more compute than my HA Green, either way, speed is unlikely to matter
So far I have not added Nabu Casa so to minimize the attack surface.