A kitchen is a very subjective thing and the perfect kitchen will vary from person to person. If you would like to design a commercial kitchen, then this might have very different appliances, and a different layout, to a domestic kitchen. The ideal kitchen will be a personal choice that you need to arrive at along with your kitchen designer.
Before getting a kitchen, commercial or domestic, designer, think about what is important to you and how you will need to use your kitchen. For example, will you need a commercial extractor fan? Will you need extensive preparation surfaces? How will you choose to have your kitchen laid out, so that there is a good balance of work surfaces, storage, and cooking facilities? These are all very important points that will need to be discussed in conjunction with your kitchen designer so that you can get the most out of your kitchen.