First, yes you are thinking about this stuff too much and second why don't you try them out and give them a listen?
Effects of protection disks under spikes
I'm curious about your thoughts on the effects of the "footers" or disks usually placed below speaker or component spikes. I have hardwood floors and would prefer to use some kind of disk under the spikes but it seems like that they might add a layer of decoupling. Would oak disks better impedence match with my floor allowing for better vibration dissipation? Am I thinking about this crap too much?