You asked me a question that surprises me a bit. Are you asking me to indicate the ideal person to sit at a table to discuss consistency?
I could describe a profile rather than an individual. This person would have to know the country and the official language communities, both English and French, very well. It would be someone with a national stature, believing in linguistic duality and the importance of not only the survival but also the development of francophones. This would be the profile in my opinion but I do not have any specific individuals to suggest.