Agreed, hopefully future FW updates would address that. For movies I also typically set it the ref offset to 0, fibre TV to 5 or even 10, and for you Y-Tube, it's all over the map between 0 and 15, obviously.
Keep in mind the Editor App allows you to shape the curve, but unless you run REW to see the results and repeat the process a few time, you will never know how well the actual results follow the target curve. If you go by ears, you better have good ears and luck, otherwise it may take forever. I would be willing to pay 10X for the App if it actually measures the actual results and show the graphs target vs actual, and better still, recommend the next manual adjustment, since it obvious couldn't it it in auto (otherwise the actual will follow the target closely). It is complicated to explain so you may not know what I am talking about lol..
As it is now, with the App, I bet Audyssey, if used with REW, has surpassed Anthem ARC in terms of EQ between 15-250 Hz performance, but not Dirac Live.