What if they are on a mount?
Because it is unbelievable to me the amount of players mounted on Mammoths and Dinosaurs that apparently need to stand in/on/over:
Bank Entrances (everywhere but Stormwind Dwarf side and Exodar side*)
Raid Entrances (Kaz*)
Dungeons Entrances (stacked three deep in the Tempest Keep ones* **)
Mailboxes (next to Stormwind’s, Ironforge’s, Darnassus’s and Dalaran’s bank*)
Flight Masters (Dalaran*)
Event NPCs
Yesterday, one Dino raider wasn’t satisfied with blocking BOTH the bank entrance and the mailbox in Darnassus; as I was interacting with the lefthand teller, he BACKED his mount into the bank to where I was standing.
I might be able to understand if they were attempting to garner admiration for attractive mounts but those mounts are anything but attractive.
So if it included the mount, that would be a serious problem.
(*just what I have observed over the last three days)
(** having the heads all moving different while they were stacked looked really creepy… and kinda cool 
.)