Good points from people.

I seem to recall a couple of options in other mmo's where players could give descriptions of what they where after when using the lfg tool.
I think it's Aion where you can not only put the instance you want, but enough typing space to add something more.
Sometimes players used this to put a stake on specific advanced loot (ha!), or in this case how they wanted to run the dungeon.
Here we go:
http://i98.photobucket.com/albums/l2.../AionLFG01.jpg

I'm sure another mmo also allowed something similar, but cannot drag the name from history at the moment - need a speed run for coffee.