Hi Adam,
Nice looking gear! Glad to see the acoustical treatments so that you can truly hear what your gear is capable of . Some thoughts for the good and betterment of your room if you don't mind:
* have you considered treating your front wall behind the speakers with either or both of diffusion and/or absorption? The reflections from the front wall are less beneficial and attenuation of them should help with image stability and specificity and soundstage too.
* due to the open area off to the left side, have you considered a thick bass trap on the side wall adjacent to your right speaker? This will help mimic the fact that the left speaker doesn't have a boundary effect so neither should the right speaker.
* I expect that the open room helps to minimize bass modal peaks but if not have you considered extending the bass traps in the back of the room up to the ceiling? Have you treated your back wall behind the listening position?
I hope you aren't touchy to these suggestions as I don't have your money for equipment but have made remarkable audible progress treating the room which in some small way may be akin to upgrading my equipment to the level that yours represents.
