What drove the decision to forgo a recipe tester? Is it at all driven by the target audience? Will the new book have a professional tester, or does the subject matter make a tester even less necessary?
Why would you need a recipe tester for recipes from an award winning restaurant? The audience likely isn't regular home cooks, rather professionals and serious 'foodies'.
Recipes intended for home cooks from a restaurant are generally, as I understand, not the preparation methods actually used in the restaurant, because home and restaurant equipment is different, and restaurant cooking relied on par cooking and other techniques to optimize order to delivery time.