Problems in audio are often rather evident as audible fact...
And most of the times there exist specific technical solutions for any "problem"...
But the main task is not only to solve evident basic problems in the mechanical, acoustic and electrical dimensions...
It is also to think about "optimization" of an audio system which seems to present no particular problem... Sometimes we search for a way to improve it for the sake of doing so ...
And some problems are easy to detect as problem...
But some are undetectable at first ...Because the owner had no audible idea experience about this factor which did not appear as an audible problem...
I read this post thread from the OP as a reflection around RMI and EMI and cheap ways to experiment about it... ..
Then it is more a possible optimization proposed set of experiments than a "tweaK" in search of a problem for me...
Most people for example will call a useless "tweak" any use of unorthodox ( schumann generators) or even a classical device ( Helmholtz resonators) to "optimize" a room... Because they perceived that their room is OK already... But most of the times their room is not "optimal" at all but they dont know it because we must do the optimization experiment to know it in the first place...
In the same way, vibrations affect the gear, it is a problem but there is always ways to go further than simple classical ready made sold solutions ... I used a combination of devices to optimize which i never perceived as a problem to solve because it was unaudible as problem when i think that perhaps vibrations is a problem...
In the electrical dimensions it is the same.... I used many unorthodox devices to optimize with succeess my amplifier but i never did it because i perceived a big problem... It was a way to optimize it... Many of this devices homemade has been ridiculed here even if they cost me nothing and they worked for my ears...
Then i welcome any good faith proposition open for discussion without rejecting people or judging them...
Is it not more interesting ?