I've wanted for some time to see whether correcting the asymmetry in front-wall 244 placement would have an appreciable effect on what I hear in the bedroom system. So I finally took a break from knocking out a for-the-fun-of-it Cold War spy novel and moved the left 244 from the corner to a position behind the left speaker that corresponds to panel placement behind the right speaker.
The result is a more coherent, better-balanced soundstage. But denuding the corner of treatment resulted in a slightly less resolved overall presentation. So my second step was to remove the horizontal 12"x48" Monster from atop the center Monster and mount it vertically in the now-empty corner.
Space limitations forced me to initially mount it "sideways"--i.e., with the panel facing straight at the opposite side wall--until I come up with a way to angle-orient it toward my nearfield listening position. Nonetheless, even with that compromise, the sonic presentation has "tightened up" and at the same time "opened out", resulting in a net improvement over the original configuration.
Here's how it looks:
