Quote Originally Posted by BatLW View Post
In general: Yes. Someone took his time and effort to call me so I at least should give the person so much of my attention to ask what it is about. But even if you would not:

That is what the Mailbox is for. I am currently not reachable. It's not like they get a "The person you called currently does not exist. Please try again later" message, but they realize I am not available or have no time to respond.

In this case, asking for Invisibility would indicate an underlying social issue with some of your peers. As stated, "Busy" blocks all tells and should make people realize you are not available.
It's ok if you prioritize others over you. But Many players prioritize themselves over others and I don't think any of the options are wrong, but certainly only one is supported in the game.

Another thing is privacy. Sometimes we want to do events and we don't want to show where we are to our friends. And I don't want to blacklist them just for this event, since removing from friends don't remove me on their friend list, only mine list. I's such an simple function.