Sherlock is ready for a second go. As a five strength sentry that makes him rather hard to break - Killers are the least efficient of all the breakers by straight up use, and at five he is solidly outside of Mimic range (even with Net-Ready Eyes). The fact that his subroutine can set back the tempo of a runner is often overlooked. Sure it doesn’t actually stop the program from staying in play, but consider this: One click to draw, one click to play again means that if either one of his subroutines successfully hits, its half a turn lost for the runner.
Combine him with Targeted Marketing calling out the program they had to put on top of their deck, or even with just NBN: Making News for a bigger better trace, he can be a bit scary. He is also a bioroid that has to be broken in one way or another if he is toward the outer bit of the server. A lot of Shaper tricks could be stopped by putting the wrong program back on top of the stack.
Aggressively costed and an ability that really can’t just be ignored, it has to be dealt with in some way, Sherlock could very well make an appearance in the future, with the right deck.