I've found that this is all I need to get what I want.
- Delete both Theater HF rolloff and Midrange compensation.
- Add a Tilt and apply a -
0.8dB -0.9dB/octave slope (equivalent to a harman 3dB/decade slope), though you can play with this to find your preference.
- Check "Disable Auto-Leveling" on the subwoofers.
Another cool thing is that If you want to leave the Theater HF Rolloff, just make sure it's set for the reference Type and Set the Tilt type to flat. Then you can switch between both targets on the AVR quickly.
EDIT: Oh yeah, also make sure you take 8 measurement points no further than 6" from the center of your main listening position. I usually cross everything over at 80Hz, and up the subwoofer by a few dB on my HEOS input. You can trim input specific speaker trims by pressing the options? button to the top right of the arrows and going to channel levels or similar.