Ok, I do think the investigator is a bit high by maybe 1 point. But here is why I love using investigators.
Please keep in mind that Lucious is a card grabbing, multiple activation and deadly with the new Agent 46 along with something that Agent can use with Mimic to pick up some deadly attacks.
Which is where the Investigators come in.
1) Investigators have a push scheme bubble that works in collaboration with Lawyers, since they drop scheme markers that cause the investigator to freely move enemy models 3 inches away from the scheme marker. This allows Agent 46 to make another charge with the model that the investigator pushed back.
2) Investigator can also discard a card to make the a negative on attack flips, which helps a bit from what I have found. Remember, Lucious is a multiple activation crew with the 3 lawyers that he comes with. Lawyers that shield other models and drop scheme markers in the process. Thus again causing the investigators bubble to push them away again.
3) The stagger does cause some mayhem in combination with the card drops for a negative flip on attacks, which can also cause a negative flip on damage flips if they flip a low card to take away another high card.
If you are looking for a straight beater crew; then this may not be your type of crew. It is a trick annoying crew to opponents, but they will pick you off one by one if you don't take advantage of grabbing cards when activating models outside of their turn (once per turn) and make your addition activations count.