Actually, they look cute especially when they roll: because of their square shape, they just keep rolling like dice.
I think Angry Birds would be so much funnier if they launched Minis and rolled them all the way till they hit and destroy the hog.
I'd like the game to pipe in the Mini engine sound before the launch but keep Angry Birds' mad voices after the launch. Best of both worlds! Just squint and imagine a red Mini instead of Red Bird:
Told ya it would be funny!