I wonder how much I could get for selling my GPUmax account... 
GPUMax emails cannot be changed, which would pose a problem.
The obvious solution would be to implement a GPUMAX pass-through, but that would effectively negate the control Pirate has over hashpower volume. (and probably bring GPUMAX out of the wonderful stability it has enjoyed these past few weeks)
That's not a project that I'd be interested in maintaining. I'm more interested in GLBSE assets, and I have a bond coming up soon!