Wow - Orbi is unbelievable! with some tweaks

Can't go lower than 25%, so essentailly that means you can't turn off 2.4Ghz. I know that there are command lines to setup seperate 2.4 and 5 Ghz SSIDs. This could be a solution for some instances. In my case, the 2.4Ghz at 25% seems to achieve the outcome I am after, which is switch to 5Ghz relatively fast, but make sure in a few odd spots in the house, just seamlessly continue coverage at 2.4Ghz. Between messing with location and transmit power, I have a good outcome for my layout. In other cases, I could see where you could get stuck. If my house was actually 30 - 40 feet shorter, it might have been tricky (a bit too small for 3 nodes and a bit to big to have stong 5Ghz coverage everywhere). I might have had to have tried the split SSIDs then.  Seems if you think about what you are trying to achieve, there is enough flexibility there to make it work how you want. 

If they add ethernet backhaul and the ability to have seperate SSIDs in the interface, they will be there.  The underlying power of the radios and backhaul in particular is impressive.