I think someone needs to get working on a dwarven sub-dungeon
(e.g. similar in length to the dragon cave, but dwarf themed)
Also I had this idea for "ninja smoke", which when it is released from dwarven gas grenades, creates a small puff of smoke and teleports the user away. I think I even did a bit of code (probably script actually) for it, i'll have to have a search.
With this and Warheck's work we could possibly make horribly annoying ninja dwarves.