You wouldn’t be disappointed with a Lutron Smart Bridge Pro and Picos, but you might be disappointed in Caséta dimmers.
I picked up some OSRAM Lightify bulbs at a bargain price and hated them. I’ve been told the Sylvania versions are better. I also picked up some OSRAM Garden Spots (v1) at a huge discount and they were always trouble on the OSRAM bridge, and only semi-stable on Hubitat, but only when I used my XBee as their repeater. However, since moving them to Zigbee2MQTT on Home Assistant via a ConBee 2 Zigbee controller, they are rock solid. I used Home Assistant Device bridge to bring them back into HE for automation and manual control via Homebridge/HomeKit.
To me, protecting my initial investment would be the preferred course, especially if there wasn’t anything other than what is a potentially solvable stability issue that bothered me about them. I realize you already made the investment in a second Hubitat hub to try to solve the issue, but having two hubs still has quite a lot of benefits thanks to Hub Mesh. Adding Home Assistant with HADB will probably solve the issues. I’m not guaranteeing it will of course, but even if it didn’t (which has not been my experience), you would gain so much benefit from Z2M, and all the available Home Assistant compatible cloud integrations that could be brought back into HE. Wouldn’t be a waste, and it has a very strong potential to solve the problems, add significant value, protect your investment, reduce e-waste, and do it all for a significantly lower cost than replacing what you already have in place.
ConBee 2 sticks also happen to be offered at a rare price reduction right now too.
