Hah... it's not that it wouldn't work, it's that when designed specifically for PvP and PvE, they take up too much resources than what FD has to spare. Please read my post again.
Edit:
And I've already explained why a PvE mode's specific C&P is an enormous investment that requires a lot of automated and manual work to maintain to keep "griefers" out.
Yes, I stand by that.
Dear Fang, you are far to clever by half; except nobody asked for a specific C&P for that PvE mode and doubt the people in the PvE mode will be more creative in finding ways to "grief" than the people in open so the solutions that work in Open should work just as well in a PvE mode. Unless of course you suggest a "free for all" Open to complement the PvE mode and if that's what you want I'm sure the PvPers can arrange their own punishment. (Someone blocking the mail slot? Open fire: problem solved. Pad hogging? Blow him up once he or she leaves the hangar.)
As for investment, the constant balancing that PvP will require is going to be a far bigger drain on developement time and will take away from the developement of PvE content.