Wow, what a great addition to the Biltmore area! I love the layout with with all of the various shops tucked off to the side. I went last Sunday and it wasn't too crazy. There is a coffee shop, bakery/restaurant, a couple of clothing boutiques (including Frances), Smeeks (closed its Central Ave location), and a couple of home decor boutiques (including Paris Envy which closed it's 7th Ave location).
There was also a really cool bicycle shop that had the funnest (sp?) helmets. Kind of pricy though at $60 but I still want one! The shop also had lots of bicycle accessories that made me consider the lack of baskets on my beach cruiser.
The thing I loved most about Union is the ability to pop into the various local shops without having to drive a bunch of places. It's cozy and lots of trinkets to be found. Including a $3 toy I bought for my daughter that she lost soon after! :)