Yeah, I admit I was like "...oh, neat.", made my avatar and went on my merry way.
I will admit, though, I do love the quick-shutdown function they added to the blades when you push the Xbox button. I also like that you can remove games from your profile that have 0 Gamerpoints to your name. I've been wanting to lose Mortal Kombat 3 after sampling the trial.
Also, for those interested, I tested a few games by installing them to the hard drive. Across my three games (Devil May Cry 4, Tales of Vesperia, and Sonic The Hedgehog (2006),) none of them had really noticeable changes in loading speed. For the prior two, the load times aren't that bad to begin with. For the last one, though, it's infamous for its gigantic load times. Installing them to the hard drive doesn't speed it up whatsoever, as expected. Still, it was worth testing it out.