I think anyone in the industry would agree that at some point, the increase in exposed surface area provided by the addition of features (and the complexity to

I think anyone in the industry would agree that at some point, the increase in exposed surface area provided by the addition of features (and the complexity to support them) has indeed decreased security at least once in the history of software. My statement doesn't say that it always leads to reduced security. I would, however, posit that it's pretty darn close to "always."