If you have a new product though, it can be tough if there isn't a market yet. Its tough coming up with something truly new, but that's when I've been most excited. After that, listening is very important. Everything we have done with our new iterations has been customer driven.
I still envy Apple, even though this is mostly good advice. They are very feature forward, but their nitch asks for it, so maybe that can be seen as the "customer asking for it".