So, let me get this straight: Your answer to requests for more robust open-world PvP and more dynamic events is to attempt to force people to go to the Western Shelf of Ium so the PvE crowd who wants to do the event can get endlessly ganked by the PvP set who would otherwise continue to ignore the place? Because the ganking in the Rakghoul plague went over so well...
Unless the rewards are all PvP-oriented, this is a fail from my perspective. I absolutely do not want to be forced to PvP. While I can't imagine why ganking is so amusing to the PvPers who do it, it's not at all amusing to me. If, however, this is meant to be a PvP-only event, I can just skip it.
I assume that the Gree thing is going to be part of the much-talked about "Ilum revamp".
To my knowledge, Bioware's never said it was going to be a PvP
revamp. I expect all PvP stuff on the western half of Ilum will just be removed outright.