I might surely give you an answer to the third question, which lies both in Badlands and Buffalo infocards:
Quote:...With the authorities loathe to patrol or pursue suspects within the confines of the extremely dangerous Badlands, Buffalo Base is the safest criminal hideout in New York. ~Buffalo
...The Badlands is a particulate cloud filled with asteroids and subject to intense electrical activity that renders most scanners inoperable ~Badlands
I am pretty sure most cloud/asteroid fields bases cannot be detected too. But I can be wrong.
EDIT: Question 4 is very complicated to answer at least for me, but I can try to suppose it's about certain concrete players or communities who might look for easy kills or have friends within K'Hara, but they also can give other players an opportunity to fair duel K'Hara (when they do nothing). Many reasons and the best solution is asking participants themselves.