I would like to see BT enabled as fully functional and the Cloud config pushed-up for backup/sync when Internet is available. Having just gone through a lengthy Internet access outage yesterday, which began just as I had started some significant changes, I found myself scrambling to disconnect devices that weren't operating properly and unable to turn off/on some critical WiFi outlets.
In my experience, Bluetooth operation has been extremely slow and often times out. Plus it's super-cumbersome to turn off WiFi on my phone so the Hydros app doesn't hang when it can't get beyond my local router.
Once I figured out all the nuances of operating Hydros via BT, it sure would have been nice to have the ability to continue with my changes and save them to the cloud when Internet access was restored nearly a day later!