If people would use this board for what it's meant to be here for good experiences would be documented as well, however it's more of a flame board at the moment.
As for what you're suggesting why not allow it to help makewebgames in more then one way. People have posted free mods to show what they are able to do for some time so use that as a base for the starting list. There are also people like a_bertrand, and Nickson who well they don't deal with mcc much are two of the most talented programmers on here. So perhaps a standard test for the people doing paid work on mwg? The problem with tests are who will mark them, and/or judge the quality.
Anyway as for a list as suggested it's not necessary all you need to do is use this board when people do work for you. Any list by one member does have the issue of pushing all work towards the members listed, and that's a little unfair to new members, hence why an open test could work better.