VP's Represent policy

In a world where both leading candidates are flip-floppers, I am looking to the vice presidents to represent the policies that they want to implement. It's harder for JD since he is so new so you can only rely on interviews. He wrote that forward so it's kind of hard to separate him from those policies in Project 2025. Walz has a record so you can kind of get an idea of what policy Kamala wants. I feel as though the policy discussions for the candidates will come more into play during the vice president debate. How do you feel about the VP's representing the policies for their candidates more than the candidates themselves?