Please reconsider a permanent squelch list. There are some players who just refuse to watch what they say on vox and in the text buffer. Some of them will even send a string of profanity your way if you kindly ask them to watch it. Others just ignore you and keep spewing filth.
There are not enough moderators to watch everything 24/7. Even HiTech has admitted there are not enough moderators.
I believe there will always be players that either can't or won't watch what they say. Those players have earned being on a permanent squelch list.