I support the idea of a new Constitution. Peter Bell and Ernest seem to be good candidates for the head of the convention if we ever have one. I would say 3-5 members per region with representation from all the major parties required.
I think the regions should be allowed to decide for themselves how they would like to choose delegates. Each regions governor could make the decision. I would imagine that Peter Bell and Ernest would both be chosen by their respective districts to be delegates at any new constitutional convention. However, I think any chairman of the convention should be decided by the delegates at the convention and not by any other body before the convention begins.