It's hard to knock Epic for opting to go with TrueSkill. Heck, the system was already in place, and there were seemingly more important areas of development to focus resources on -- and Epic succeeded with an exceptional title. But there's no denying that the Xbox Live community has been upset with how the limitations of TrueSkill affect Gears of War. Epic is certainly considering these opinions, and it wouldn't be too far-fetched to predict that a future update will replace TrueSkill with an Epic-designed matchmaking system that supports parties.
[Update: We incorrectly identified Knuckles Dawson as an employee of Shadowrun developer FASA when he is in fact