I'm currently on my third home theater room, having moved twice and been at this for about 17 years. The one piece of advice I can give you anecdotally is that oddly shaped rooms tend to sound better. My current room is L-shaped, and seems to have magically resolved the acoustical issues that my former rectangular box-rooms created. This with very little acoustic treatment, just one 2'x4' absorptive side wall panel and a panel behind. The installer confirmed that has been his experience too - the non-box shape solves a lot of problems.
Home theater design help
Recently I discovered that a wall I did not I think I could move is actually removeable and thus I can more than double my current home theater room into a much larger home theater/ media/ entertainment space. I engaged what dealers remain in my area but none seemed all that interesed or capable of managing design and construction changes especially since I have most of the equipment already. Anyone have any ideas on how to pursue this? I roughly know what I want but also know there’s likely a lot I don’t know around design, sound tailoring, decorating, acoustics etc. kind of at an impasse currently. Thanks!