I know that we have had this debate before, but I think that Dale's posts really highlight something that I have been thinking about for a while. Dale's posts show guys doing some things that are certainly good fighting but lack a distinctive flair so that everyone agrees that the figher is exemplifying WCness. To me, that sounds like a style because there is really only one way to do it.
To me a system is characterized by this statement, "You may only really use about 50% of what I am going to teach you, but we can't know which 50% so I have to show you the whole thing." So in part, I think that the term system is way over used. I have been thinking that many people feel that they can't make their WCK work, and go out and seek other arts to feed back into their WCK. While not proof positive of a style, it is certainly very indicative of one.
A good example of a system would be Bando. Bando has kickboxing, middle style which is your typical traditional, Animal styles, and grappling. All of these styles are based on core beliefs and practices and the Bando practitioner has many methods to choose from.