@Viktor Jaep is it feasible to have separate configs for the WAN0/WAN1/Wireguard/OpenVPN sections or would that be "scope creep" and silly?
What are your thoughts?
In my case my main WAN0 HFC connection is 1000 Mbps down / 100 Mbps up, my WAN1 5G backup is about 80-200 down / 5-40 up (varies wildly).
I only have a couple of devices going via NordVPN (Wireguard) and VPN Director, and that never pulls more than 300-350 Mbps download, in Sydney at least.
So defining what constitutes Low/Medium/High utilisation "depends" on the interface if you see what I mean ... probably just over-complicating it!