Thanks for the comments, I am pretty happy with the room/system performance.
Yes, many of the bass traps are built into the ceiling/wall corners. I also have base traps in the rear corners of the room as well. Not visible in the pictures is an array of absorbent panels like those on the rear walls suspended to the ceiling. All of these panels are great at eliminating the first reflection slap echo. They have gone a long way allowing the sound to remain totally focused and uncluttered...