It would be great for the next major release to start adding some fancy animations to the controls. Take a look at the following site and see when you change tab page how the animation works. HTC.Com
Actually, if you spend some time looking at different phone models, you'll see they use pretty sleek animation in different models like how their Carousel works.
Just some ideas!
[Update] Here is another Link
and if you click on the icons like "Home", "People", "Message", etc. you'll see nice animations!