The person that originally wrote the code was mostly self-taught. At one point he went to a WCF class and bought into the instructor's mantra of "WCF everywhere". Then he used WCF in applications that were only used on a single machine and had no services connecting to it or calling out to other services. I had to untangle all that mess too.

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>I think in some cases, the problem is that a person doesn't stop to think, "hey, could this be done in a different way?". Some people aren't even aware that you can pass a collection.
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>(And in partial fairness, sometimes the technologies in the past didn't support it, but certainly no excuse these days)