Yes, if there are changes you like in your potato salad dressing, go for it! Just make sure that the volume of liquids you substitute for are roughly the same. (For instance, if you hate pickle juice in your potato salad, I’d recommend adding a tablespoon of another flavorful acid liquid like vinegar.)  You can also use Miracle Whip instead of mayo if you prefer. Some readers like to make no-mayo potato salad with plain Greek yogurt too!