When applying a gradient fill to an object it was not possible to adjust a gradient after applying. As a professional graphics designer I can say that a gradient never looks perfect the first time and always needs adjustment. Instead with Expression Design you had to apply the whole gradient again, hoping that this time it would look perfect (which never happened). This made the whole software the least productive tool ever for our job. We really tried, but Expression was simply unusable for us,
I even suspect that the totally useless gradient tool is the reason why Microsoft developers decided to make the Windows 8 icons monochrome.