Greylist, but please don't do them.
Difference between Outgoing motion detector and Vanilla Cop
Outgoing motion detector is much more confusing, will nearly always require mod clarification, doesn't detect roles that have been roleblocked (further hampering the role) and can only sometimes catch fake-claiming scum. Is swingier, since you get the edge case of targeting the NK person and having that person claim VT, but usually will be useless.
Vanilla Cop: Extra roles detected (in a normal): Bulletproof, Neighbors, Masons, Miller, Innocent Child, Godfather
That's a really thin line to parse.
Incoming Motion detector
*Bob dies*
"Guyz, Bob was targeted last night! Guyz, I have a role that tells me Bob was targeted last night. You'll never believe it!"