I only use HA for problematic devices (Kasa and Sengled). I don't see any advantage to moving everything to HA. Consider that if your HA fail, your entire smart home will go down with it.
As for the sd cards on rpi, I change them all for small SSD after one died whitout warning.
Edit: To be fair, my Kasa problem dates from 2 years ago. A lot of work has been done since then in the Kasa integration and the problem likely has been solved now. But with 40+ devices, I don't feel like redoing all the automations involved.
@frmWink2Hubitat this is probably the best approach - keep the majority of the devices on the hub where your automations are running. Use the accompanying other hub only for these devices, which you can not connect on the main hub.
I didn’t express myself clearly .. what I proposed was to setup Home Assistant with Zigbee 2MQTT, pair the Aqara Blinds there and bring it to Hubitat using the HA-> HE integration.
Leave all the other Zigbee devices that play nicely in Hubitat, and continue using the HE automations. This is also my setup.