Why does people comment without even reading what they are answering to?
What do you mean? I think I understand you perfectly.
You want to cut out a part of the game, remove one side of the coin, chip away at the soul of the game. Bad experiences are a part of good experiences, if you never had a bad one, you wouldn't be aware you are having a good one. You want to make game bland and sterile where people cant do lame crap they are supposed to do in a game.
If someone sitting on a mailbox, where another one is 10 seconds away, bothers you - single player games, try those. Everyone else has accpeted that they are playing with other people and this kind of stuff is to be expected.
I once sat on the Auctioneer in Dalaran, instead of "how do I interact with npc" everyone was "omg dad please ban this criminal scum", good laughs. Something really enjoyable watching people spiraling and freaking out like I'm killing their children when solution is 20second search away.
Everybody, calm down, take a drink and relax. There is better solution than all of this. Really just create an invisible object on top of mailbox and in a small radius around mailbox, just so that they cannot go on top of it. Similar to NBCs in Blackrock where they are considered hard objects (you cannot walk through them). Does that make sense?