I personally love how the made a Main Street into the animal crossing series. Because every building is like a remake of what it should look like in City Folk. Plus, there was no Garden Shop in City Folk, so that was quite new, and of course giving Kicks a building to sell shoes to villagers.
My Comparison:
ACNL: Redd is in a tent now selling paintings/sculptures, Katrina is in a tent at first, but can be back in a building, Luna is a new character, that does dream towns, and is in its own building, KK Slider is in a building now, Tom Nook is in a Interior Home Place, Post Office is in it's own building now, Timmy and Tommy has it's building, Harriet is collab with the Able Sisters, Leif was new to the series, so they give him a building, but later collab with Timmy and Tommy, and later collab with Gracie, Kicks has his own building now, and the Museum is just remade but still the same as the City Folk.
ACCF: Redd is a building selling random furniture, Katrina is in a building, Luna did not exist, KK Slider was in the Museum at certain times of the week, Tom Nook own a building that was in our town selling furniture, Post Office was in the Town Hall, Timmy and Tommy existed when you unlocked the last extension of Tom Nook's store, Leif did not exist, Able Sisters was in a small shop in your town, Harriet was in the City in a building, Kicks was in the City standing outside on top of mini stairs, and the Museum was in your town.