Your most limiting factor when designing your Laundry, aside from budget, is the space you have available. Large Laundries can include a pet washing area, inside drying rack space and a number of space consuming features. Most people have to compromise on their wish list to work with their available space.
I recommend writing a Wish List for your new Laundry. You can source ideas from looking at photos in magazines, on www.pinterest.com and www.houzz.com, looking at friend’s Laundries and thinking about your ideal space.