This is an idea that I would love to see and would cut back on the length of many players’ blocked names pages.
Instead of blocking/ignoring that one character it should ignore the entire collection of characters from that player.
It doesn’t even need to tell you the numbers of their account; it could look like this: “Goldseller.****”.
This would also cut back on chat spamming of gold selling and GMs wouldn’t have such a large load of reports. Everyone would just block the spammers when they see them and then that $60 dollar account of GW2 is blocked from their screen until they unblock it.