Well one thing that adds to any game is a loverly world where its populated with furniture that makes it look like there was people living there, all too many times the games these days look like its a stage where everything has been placed to hinder your progress and nobody actually uses the stuff. A perfect example of stages is quite simply a warehouse level where all the boxes are arranged in a nice maze for you to navigate surely nobody actually stacks em like that, and office furniture that is arranged so it takes hours to get around.
Well thats not us, thankfully :). Yes im adding the furniture now :)
EDIT:The furniture is in there now so all I need to do is add the contact zones so that people can search things and find stuff to use in the game :D.