I don't really go in for tweaks. I do use 2 Magic Bricks, one on each Shunyata Hydra 4, but it is just to keep them on the shelf as the power cables tend to pull it back. As for cables, I bought mostly used and my rule is no more than $400-$500 for a cable. I spent a lot of time in 2018 dialing in my system and I am a "set and forget" kind of guy, just like the late Ron Popeil.
It’s all a matter of degree
It may be stating the obvious, but each A’goner will have his own idea of how far he must go to satisfy his addiction. To one member, enjoyment can be obtained with just a setup and no tweaks. Another will add a few or several and be satisfied. Then there are those who must go on an all out quest for nirvana which may never be sated.
Which camp are you in?