I love to see what game tracker is but I am having trouble using it as it has limited integration, for profile linking I think more than psn, Microsoft, and twitter; should be options. One that I would like to see is call of duty elite.
Better server and team integration setup would be nice, right now I see your service as a possibility to open up as a default home for my team but since it doesn't provide as much as my website does I cant replace the website and with no auto reader for things like news I cant post things on both without manually logging in on each to do it. Being able to sync things like news feed, FB likes, and space to post general info, maybe even add in your own website hosting so I can drop the old host. This would make this service a better place to put team forums and news feeds on.

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A live chat and friends list on this website would also be cool

Thanks for your suggestions