  Precise measurements of the proton form factor ratio mu*GE/GM from Rosenbluth
separation measurements can be combined with Polarization based extractions to
provide significant constraints on two-photon exchange contributions to the
elastic e-p cross section. We present an overview of JLab experiment E05-017,
the high-precision Super-Rosenbluth measurements of the proton form factor
taken in Hall C of Jefferson Lab. We then examine what precision could be
obtained for Super-Rosenbluth measurements using a low-intensity positron beam
at Jefferson Lab.
