I admit this is not real well thought out in that I haven't gone through and come up with myriad examples of threads that illustrate the need for this, but it does strike me that we don't really have a forum that helps people when they're trying to either pick an airline/alliance or to switch to a different carrier/alliance.

I frequently see threads that say something like: "UA 1K thinking of switching to CO. What should I know?" Due to our rules against cross-posting, this thread can only be posted in UA or CO, and which forum it's posted in is likely to bring very different answers as the OP is unlikely to get many answers from CO fliers in UA and vice versa. To get the complete picture, s/he really needs a balance of answers from fliers in both programs.

New members/fliers who have no idea which of any number of carriers they should try and stick with could also use this thread to post their travel patterns and solicit advice on which carrier would be right for them. It seems this would be particularly helpful to new folks as they can't post their question in six forums, when they perhaps feel they have six options.

Having a forum that consolidates these types of questions would also make searching easier for others coming along with the same questions as there would be only one forum to search in as opposed to two or more.

As I said, I haven't done any research, but it does strike me as something that could be useful and perhaps worth considering.