"Oh, so this is a Kazu run." Options

[Kazuhiro]

My last run involved Johnson telling the runners to find and assassinate five people, about whom he would divulge no information except their names, what little intel on him he had, and the fact that they would all be in a mall at the same time. The face did his legwork, the technomancer got himself an admin account at the security booth, and the other characters sharpened their cyberspurs and filled their magazines with EX-EX rounds. They all knew that the Johnson was withholding info-- after all he didn't even say why he wanted these people dead-- but they weren't expecting small wooden figurines being placed in discreet locations to form a circle encompassing the crowd at the big Niketown opening.

The thing is, though, that one of my players commented, "Oh, so this is a Kazu run after all. He sends us off on a run only to dump a big new development on us in the middle of it." At what point does adding "The Twist" in the middle of the mission become cliche?

Is it better to give the runners a simple "run in, steal this, gtfo" mission once in a while, so that the occasional SURPRISE BLOOD MAGES is still a surprise?