@Royski That's another interesting approach I'd like to try.
I'm doing a version where my first hub has nothing but Zwave devices and Zigbee repeaters friendly with Xiaomi devices. I use RM on that hub and no WC. That hub has zigbee on Channel 23. My wifi is on channel 7.
My second hub is the newest M5 hub and it only has those Iris 3210-L smart plugs for zigbee repeaters and a few zwave devices. This hub has zigbee on channel 26.
I've found it interesting how both hubs and their respective connected devices are working perfect when both are running zigbee on those upper zigbee channels. This testing has demonstrated how all of my previous zigbee mesh issues with both Wink and STs, was caused by smart bulbs that were poor repeaters and had nothing to do with the hub's zigbee radio channel.
I do appreciate @nh.schottfam willingness to keep tinkering with Adrian's original WC code for use with Hubitat. Having choice when it comes to apps and functionality on any platform is a win for all involved.