Recently, all the companies seem to be copying each other. M$ is apparantly making Lips, which is meant to be a Singstar like think, Scene it is copying buzz. Sony is also copying them with acomplishments, trophies and copying Nintendo with the home avatars. M$ is also copying the Miis, or so it is rumoured
Personally, i don't particularily mind it, as people benefit from it. Sony is taking the miis and making it better (we hope !) with home and improving in the social aspects of Xbox live (we hope!). The main point is that it is clearly not just ripping off the others console, like the trophies could be accused of, though having a nice 3D trophy and the Star wars senate room like place to show them off is a great idea