Hi Linds,
Again, very impressive. Regarding your questions - just my 2 cents:
I think implementing this in one pod first (especially if you could find a specific pod/attending combination that were specifically motivated) would be good as a learning experience and as proof of concept for the rest of the staff. After you got good results with one pod, I think implementing it across the entire OR would be appropriate - although each pod may have its individual needs, you have built in a comprehensive mechanism to get stakeholder feedback and implement it.
Regarding the MZ -> MB transition, although I think you could make an argument for working with the staff and getting their buy-in at MZ, things will change so much when we move to MB that waiting until the transition might be beneficial. Then you can focus your energy at Parnassus and once you have a good system there, you can expand to MB and implement a sustainable system there.