I liked the exterior of the Fortune Shop! It gives off kind of a nighttime city vibe. I just don't like how it uses the same fortune tent room area. I feel like it be cool to see something different from the tent.
Shampoodle I also really like. I think it would be cool to see wigs being sold there instead of the Able Sisters.
I have an appreciation for several of the buildings on Main Street, such as Club LOL, Shampoodle, the Post Office, and the Dream Suite (while it was still functional). But overall, my favourite has to be the Nookling Stores. I particularly admire the upgrades and the way it evolves over time.
I love the gardening shop and the Post Office Main Street was a really great way to have all the shops in New Leaf. I hope a similar thing appears in a future AC entry.