Hohoh, very interesting! I like all of these changes, namely the fact that I might actually see nomads prowling around again. Insta-cloak instead of perma-cloak seems fair and balanced. Ready thy cloaking disruptors!
Also ready thyself for random nomads jumping you and kidnapping you with their warp-fields. O_o That's a scary, but interesting challenge! Beware deception!
Edit: Time to make a nomad indie and test the /jump command. That actually creates an interesting idea. Just /jump randomly until you hit a system with people in it. Let fate decide who you RP with and/or terrorize!