good idea for plugin/homebrew

so guys this ones for the 360 users out the because the PS3 is just to expencive well as most of you know u can now have avatars well I downloaded the Xbox dashboard for CXMB(the new dashboard) and noticed it was lacking something....an avatar so I was just wondering if we could do something like it like or mabey if theres a tut anyware on the site I could make my own homebrew but anyways i wouldent wanna make it like you need to select it to use it I would like it to be a plugin so i can play it but switch to other games easily so is anyone doing this yet or wheres a tut so i can make it?