minimal connection points are highly over-rated. The Graham Supreme demonstrates this quite handily.How so? The only way to know would be to compare a single-wired Phantom Supreme to a standard-wired one, which no one has done AFAIK.
The problems caused by additional connections go beyond increased capacitance or resistance. At the atomic level, each material boundary presents a barrier to the unimpeded flow of electrons. Diffraction at a boundary is inevitable and varies in proportion with frequency, it's basic physics. Sonically speaking, the more boundaries, the more mud.
A single crystal conductor presents the fewest boundaries. Insert multiple crystals and you get multiple diffractions. Insert different materials and you get even more diffractions.
I agree with Dertonarm that a single-wired Phantom Supreme would be an experiment worth hearing.