There are lots of things I would change notation-wise before even thinking about pie or Tau.
Like, have current be defined to flow in the same direction as the electrons are moving, for starters. The fact it's defined to move from positive to negative instead of negative to positive still grates on me.
Actually, now that I put it into words, it might just be better to define electrons as positive and protons as negative instead. That would keep the analog between gravitational and electric potential, and have the current flow the right way with the electrons.
Like, have current be defined to flow in the same direction as the electrons are moving, for starters. The fact it's defined to move from positive to negative instead of negative to positive still grates on me.
Actually, now that I put it into words, it might just be better to define electrons as positive and protons as negative instead. That would keep the analog between gravitational and electric potential, and have the current flow the right way with the electrons.