It's gotten me thinking about the setting and I'm having quite a bit of fun with it, now. I'm trying to avoid doing any planning, this is my very first Dungeon World scenario and I THINK I'll have a player whose only ever played one bad session of one RPG before (and it was DnD 4e), so I'm trying to go by the book and just play to discover. But I sort of gave my players the broad strokes and listed off the playbooks, because they seemed interested, and now they're all choosing and starting to ask for things, so I'm doing a little more thinking than I had planned to.
So, instead of your usual gnomes, these gnomes have an elemental flair - their hearts are actually jewels infused with elemental energy. Stormheart Gnomes, Blazeheart Gnomes, Deepheart Gnomes, etc. With two little sentences I have a whole race of elementally-infused, magically interesting little folk who fit the gnome roles my players are expecting while still letting me twist their expectations.
Plus, I get to give a little wink over to Treasure Trolls, and that's never a bad thing ;)