people seem to confuse adding features to additions in the interface. Most of the times users are either subconsciously frustrated by a problem or that there isn't a solution for it yet (i.e. why someone else hasn't solved it yet).

perfection??? I think most software sucks so much that it doesn't do anything useful. It would be better to try and get your product to do just one thing that is useful for one person.

Aiming for perfection is just an excuse for not building something useful.