I'm considering a few minor changes in my room & would appreciate advice from GIK and others knowledgeable. As background, my taste is for a room on the dead side. I don't mean completely dead -- I've don't like that, but I prefer to suppress the local venue and emphasize the recorded venue.
In the photo, there are three panels on each sidewall between listener and soffit traps. The front two are 2" ASC panels (in service for 15 yrs), and those closest to the listener are Vicoustic "skyline" EPS diffusers. (You can just see one on the right of the photo.)
I am considering replacing the frontmost panels with something thicker: 244, A6, or Monster panels. Then the diffusers would be placed towards the back of the room, the space being filled by the freed ASC panels. The objective is even better bass control.
I also wonder about adding ceiling treatment between speakers and user. This is complicated by the 7-foot ceiling, and my desire not to create a hazard to tall visitors, nor a visual reminder that the ceiling is low. The speakers are directional and don't send a lot of energy towards the ceiling. (There already is ceiling treatment in the back of the room.)
Question 1: What product to use on the sidewalls?
Question 2: Does GIK make anything thin that would work on the ceiling? I don't want to suspend a 244 on cloud brackets, for the reasons given earlier.