In our friends list, we have the option of:
Disabling Location Sharing
Disabling Online Status Sharing
Disabling Friend Requests in general from showing up
These options are awesome and I think most of us use them, but the issue with them is that they don't seem to persist after you close the game and re-open it. They persist as long as you don't close the game (i.e. you just switch to another character), so why not extend it to whenever you close the game and re-open it? Especially considering the bugs that basically require you to restart your client to fix them.