Some time back whilst inside the Ladies Rest 'Mother' was hazing and generating a considerable amount of IC fear through the emote command that produces the server message text. I can only assume to do such she had to be in mist form/invisible/or highly stealthed at the time to pull it off. Her emotes of noises at the windows, drafts from fireplace etc. really left one feeling cornered and vulnerable should she burst in and openly begin slaughtering the people within.
Something like this, for other MPC types would be helpful, while they cannot normally go unseen into the temple/inns etc, if they could somehow be given a means to send such messages into the attached area, wether via a command used outside and in close proximity to the door (like the [knock] emote) which produces said text to those inside. It would greatly enhance the MPC's ability to taunt and lure people into the open without needing to enter said zones directly. Heck, it believe it should be possibele to use a power/item and target a door, call on the Waypoint it leads to and there generate a temporary "voice" object that can broadcast their emotes.
MPC's basically thrive on PC interaction, but smart PC's will avoid situations that put them in an MPC's path. Inventing methods to bring people out into the night more frequently, and preferrably farther than a few steps from safety is where we can benefit most. Perhaps a herb node that spawns only at night in certain zones that promotes travel at night for those who desire such. I'm sure there are numerous great ideas, heck add a small dungeon somewhere a half dozen zones away from the outskirts that only has spawns in the night, making it worthless to visit by day for any form of XP or Loot.