I think you all are missing the point of what is considered a Massive Multiplayer On-line game. Tough it out or leave or ask the authorities(GMs) to look into the matter.
On the other hand, if you want to go ahead with tis rediculous idea. Here's asuggestion, have a general ignore toggle for ON or OFF, when ON you will start to ingore everyhting with in the game. All the NPC, the rest of the PCs, etc. In the same list you can have the names of people you don't ignore and they to have toggle their ignore switch in order for you and them to see one another. And the catch is, to turn it OFF you have to wait a week RL for the effect to ware off, that way you just can't blink in and out randomly on a whim and with the consequence of not having any other interaction with in the game except for the others that decided to join you in the retreat, a weeks worth to contemplate the issue is a good preventive measure for the unsocial craving a time out. No skills, no quests, and no other interactions but a weeks sabbatical from playing the game with out actually leaving the game, a time worth of RP-chatting with close friends in a desolate but uninterupted 3D environment.
Or wait till you can buy you own house and give keys out to just your friends..
An other negative, What if you are spying on me or my guild, I can just force you to give up by placing you on my ignore list, thus disallowing you the abilities in which spying relies upon. If you want to ignore someone go right ahead but don't force it up on others.