Don't give up on Tony yet - I'm sure working part time on a project like this is not easy. I myself have also been exploring the possibility of building a automatic processor for E6. Since I don't have any baggage of sticking to the Jobo drums, I have less constraints to work with.
I like Phototherm's approach of using a direct heating pan instead of using a water bath really speeds things up, and helps to reduce the footprint of the design. I have been thinking about modifying the paterson tank to do the job - by placing it on the side, adding an inlet valve to the top, and an outlet valve at the bottom, and drilling a hole through the top cover to allow the shaft of a stepper motor to rotate the spindle. Solutions can either be fed via gravity and controlled by solenoid valves. Or a pump can be used to deliver the chemicals into the tank. I am hoping this approach will have less number of moving parts, and less complex coupling mechanism.
One hurdle of the prototype is the fabrication of custom parts and brackets - something that I'm not sure how to do cheaply in Singapore (that's probably also because I'm not in the line of hardware prototyping).
Well, we will see! With the dwindling number of wet labs, someone will eventually crack this problem - otherwise E6 might really go away in due course!