I think a lot of the animosity that came up over "begging" is directly a result of that... begging for pins
at cost and the same people who always end up with them after a whole lot of, well,... begging... Verses the people who have to pay and/or trade hard for those pins. People can do what they want with their time and their pins-- but I can see the side of the people who brought up the issue clearly.
At the end of the day, people are going to help out who they are going to help out whether it be because they have an outside relationship, they have received a favor from them in the past, they like how they conduct themselves on the boards, etc and I don't think a list is going to change that... as has been brought up already, it will probably just hurt people who don't get responses, ever, and it will really bring attention to that as they are on a "master thread" that everyone is constantly looking at.
I think maybe its better if everyone just self-moderates and posts when they
really need help with something... and offer something appropriate in return. Just my thoughts, I hope I haven't offended.