The only thing worth going here for (IMHO) is Carrefour. I've checked it out several times and it's…read morepretty much what you'd find in any shopping centre - H&M - Zara - Etam - Toys R Us even a Tescos wine store. There are a few French boutiques, gift shops and shoe shops, but generally they are average to over priced, especially the electrical store Darty. I can only suppose that they pay a premium in rent that they have to pass on.
If you're gasping for a pint there is an English pub in the food court, which is a bizarre faux French street cafe affair (see photo).
If you do go, make sure you make a careful note of where you've parked and which entrance you use (it's easy to get turned around).