This would be really cool.
See here : http://www.skyestream.com/cart/shopcart_yy3_main.htm

Do you think it would be too difficult to achieve?

Basically it displays a character that animates your live incoming calls with lip-synced animation, and you can also record an animated message and send (provide we can use MMS) to your contacts.
Pretty cool.

Anyone dares?
Vasco