Both of those stores would be excellent for Lenox, however I have heard that parent company Abercrombie is not really in expansion mode right now especially on the Ruehl brand. Since Gilly Hicks is so new, they'll probably wait until we start coming out of the recession to expand further.
I'd like to see a lifestyle component added to the Peachtree front of Lenox, tying it into the streetscape of Peachtree. Stores that are not in Atlanta yet such as Billy Reid (closest stores are Nashville and Charleston), Bose (surprised that there isn't one already), CH Carolina Herrera (rumored to be interested in SOB), Custo Barcelona (closest store is in Tampa), DeBeers, Free People (closest store is DC), Wolford (closest store is in Tampa), Original Penguin, Marciano (parent designer boutique of Guess, closest location is in Jacksonville), Swatch, Buckle (closest is North Point in Alpharetta) would be good fits as tenants.
Other high-end stores that still have not committed to Atlanta, but that I would like to see are Chanel, Emporio Armani, Yves St. Laurent, Fendi, Christofle, Dior, Zegna, Futuretronics, Marc Jacobs, Prada, and of course Barney's.
Streets of Buckhead will take Atlanta to the next retailing level and I hope Simon competes by making Lenox more interactive with its urban setting. As far as Phipps, I think they will hold their own. I sure hope so as Phipps, to me, is one of the most beautiful malls in the country (with the exception of Belk).