Rollei prices are kind of funny. For a while, anything (MF) was available for $1400-2000, unless they were super exotic. Then they went down, then up.... They do bounce around. The good news is that with the Hy6, and focus confirmation, use of the otherwise overlooked manual lenses is really easy, and thus one can avoid the AF cost premium. That said, one of those new 120 mm lenses, if they made it an AF like they had originally thought to, would be delightful.
As to reconfiguring the mount? Wow, like Graham, didn't think it possible. Alpa has a Rollei lens mount for their camera, but that's about it.
Those bemoaning the lack of 110/2 lenses should know that it weighs a ton, more than the Schneider glass. Maybe that's a good reason to talk yourself out of it.