Ironically, a perfectly rigid stand won't work at this either,
because a perfectly rigid stand is incapable of receiving energy.

Do you have an educated guess - if my twisted metal stand will affect the
sound somehow, then how does it affect? Maybe slightly dampen some of the
lower frequencies? Maybe the twisted piece of metal can even act as a comb
filter? Could it even possibly reduce transient playback?

Any ideas what kind of music or test signals I should listen to if I build
this stand and then test it out?