Lol!
That's looking ever more awesome, Kiwi!
Couple of suggestions...
Maybe re-code the ethereal mounts so that when they aren't being ridden they die?
Add a couple of Ghost Varient waderers - one a dead guy who just runs around ooooOOOoooOOing, one a guy with a dead bonded pet following him saying "plz res ostard!"
Add some bank macro ones
Maybe as a seperate class so they only spout it near a banker?
Hmmm...
Maybe a guy spamming "Gate to vendor house!" and opening a gate... Dunno how dable that is, or where you'd like the gate too... Maybe the Liche Lord room...