Mmmhmmm. I'm going to share some unwritten rules (well, written now, since I'm putting them out) to being a Phantom -- or any terrorist.
Interacting with traders/miners:
If they show no RP, blow them up
If they try to run without a word, CD them and blow them up
If all they do is rules lawyer, blow them up
If they RP back, RP with them and give them a way to escape
Let's see, what category did you fall into... the first one? Well, what is the Phantom response? Correct, blow you up!
Takes two to tango.
The old adage I prefer in this case is YOU SOW WHAT YOU REAP!!
On that note, I am a proud owner of every single kind of Terrorist ID on this server. I've been around this block way more than once. Way more. More often than not, it's not the terrorist (we're being vague here, this includes Keepers, Wilde, Phantoms, and generic Terrorists) who is at fault for the lack of RP, but the other party. Trust me when I say if you try to RP, you usually get it back.
And if you were trying to RP, well, we go on experience. A guy that sits there and just keeps mining while saying "why you shoot?" is 98% of the time not looking for RP. If you're that 2%, well, sucks to be you.
EDIT: Also, to the whole "Phantoms are an admin playground" thing... only 2 active Phantoms (forgive me if I'm wrong, I'm not looking at anything right now) are Admins.