Interesting concept. I know that different materials used as footers can make a difference. And I bet the jumper wire material would have the same effect. But I haven't tried it.......yet.
Sound color with different jumper materials,
Change the sound color with different jumper materials, have you ever tried using solid core copper silver vs multi strand gauge, to see if the high frequencies improve? Currently my speaker wires are plugged into the HF with the multi-strand jumper and gauge going to the LF. Have you ever tried connecting the speaker wires to the LF terminals and using a solid core copper/silver jumper to the HF. What were your results?