I think one user having the ultimate judgement on the process is neat and it saves a bunch of time! I also can't see anything hugely controversial being decided when you have such a solid team either, so it looks pretty win/win. I think your idea will work fine so long as people understand their "place" for lack of better word in the system. I'm assuming the role of PR users will be to vote in polls and give their opinions in threads which then gives yourself and the council members an idea about how people feel generally towards the issue in question.
Only recommendation is that you make some kind of "Ideal PR Member" guideline thing so people understand what their role is better after this change in the system.