Aside from the stage being stupidly big, the only thing I can truely complain about is how the platforms aren't even connected to the stage. A lot of people made fun of how the Halberd was just a bunch of platforms with a pretty moving background, and this one is even more blatant.
Although, they did an outstanding job recreating the city.
You can see the original layout here. It's seriously almost 100% accurate. The only thing they moved was the Pokey statue.
The cardboard cut-out buildings even have the original graphics from Mother 3 pasted on them. Genius!
Nintendo should take this delay as an opportunity to put their translation team on Mother 3. *nod*