I really don't miss the Start button that much & haven't downloaded that app yet, many times my pc boots to my desktop instead of the tiles anyway.
Yeah I always pin the main desktop apps to my taskbar anyway I don't like a cluster of desktop shortcuts. Most people will spend most of their time on the new start screen using Apps anyway to find out about the news,sports,music so forth. The Desktop will only be used to do business like things so to me I think people will start seeing this that it's easier to use Apps on the new Start Screen for their day to day things.