Even though I am watching this thread, I actually gave up on this mod due to lack of support.

I am working on my own solution that is moving along well.

Here's what I have so far:
Visit the under developement project here http://www.munchieuniversity.com

The links to New York/Buffalo are the ones to look at. When a person registers at any restaurant in the Buffalo mall, they are registered for all Buffalo stores.

In my design, each store has it's own unique product list, with no need to add tags like the multisite mod. It might be fairly easy to share product amoung stores, but I do not need this so I haven't tried to make the mod.

Each order is unique to one store and cannot/will not be combined with others (by design). Again, I think a mod can be made to share orders also if needed.

If there is enough interest, I can write up how I got to this point.

Jeff