Most rooms don’t need acoustical treatment.

Helmholtz resonators aren't something you can just add to a room willy billy, they are very hard to get right even with proper measurements.

Communicating cheap way to experiment and improve the system is not putting others at risk




May not be putting them at risk, but might get them on an episode of hoarders.

dont insult my audio room because this is a "laboratory" for me not a living room




That's the problem, most people use a living room for their listening pleasure, so it can't look like a laboratory. I'm not trying to say all your ideas are bad, some are quite good, just seems like you have every tweak known to mankind in there. I don't know how every tweek you use can add up to a sonic benefit.