I think all you need is a IR repeater or a receiver that has a jack for a remote IR sensor.
Put the receiver anywhere and wire it up. Behind the TV. In a closet. Up in the attic. IR receiver goes in your nook. Everything runs as normal, just the AVR is out of site. It sounds bad but think about it, how often do you actually have to touch the AVR once everything is installed and setup?
Also looking at it you might have enough room to work with to take the stand off the TV and put it on a wall mount, creating enough clearance below for a slim line avr.