I would be totally against this idea.
This is a board about Miles and Points (for the most part) and - in my opinion - not about new members vs veteran users.
I have become very concerned about how some of our veteran members have chosen to treat new members. We would all be well heeded to remember that we were all "newbies" at one time or another. Where we were once the students here... we now have the opportunity to be the teachers.
I would oppose any attempt to subforum our airline/hotel forums based on user "experience".
William