What do you mean 'run out of arguments'?

FWIW my intuition tells me that Tony's system would work better as a stereo hifi without the large CRT, rack and associated electronics situated between the loudspeakers.

FWIW2 I don't believe stands are critical except for turntables and to a lesser extent CDPs and speakers. What matters more is layout.

FWIW3 I can think of at least three vibration sources, internal from transformers or whatever, external coming up the rack, and direct from the air. If you wall mount onto a partition wall the wall will move more than if you mount onto a structural wall but it may be better than mounting to a suspended floor.

Paul