I really like that both Edge and Eurogamer are there, giving the overall score much more weight and authority since instead of being only 2 sites out of ~100 (on GR/Meta), their proportion actually has some significance when being 2 out of 15!
Yes, they are controversial but I think most.. what should I say not to offend anyone.. most 'sophisticated' gamers acknowledge those two sites as very serious and proffessional in general, and most importantly they're having a lot of integrity.
EDIT:
You got a chance of a lifetime, plz staff, don't blow this superb idea (by diluting the list). If you pull it off by enough people helping to update the 15-score, this will be the super score everyone will refer to (at least on this site lol) when arguing and claiming quality level of a game. Plus it's extremely valuable for my personal use when predicting and stat analyzing games in relation to the sales data in the data base.