As I said, for what it looks like, it looks great. But the whole idea of them having a town hall is new, which means it takes some getting used to. Oh and together with that worker contraption you uploaded, it does make sense.
In fact, gnomes really are an undiscovered area of Warcraft, I suppose because people, including me, always think of them the same as dwarves, or better yet, as their 'technicians', and that's not too far from the truth, since even Blizzard didn't bother to give them a proper lore. According to wowpedia.
So yeah, what you're saying is true, it makes perfect sense for them to be 'tech' oriented. Maybe as a stand alone custom-race they'd not really put much of a fight.