Shes a corporate democrat, maybe slightly less corporate than Biden, but she is miles away from being a genuine progressive.There are usually strong specific policy statements in POTUS elections I think. Clinton had "It's the economy, stupid." They have to appeal to wider audiences and don't want to held to their word in case they can't get it done, ie. Trump's Mexican paid border wall. As said above, policies are also a part of the party's position, not just the POTUS.
Character, integrity, and intelligence are all important aspects to a candidate. You have to trust his/her ability to make smart, measured, and effective decisions under stress. Selecting a good staff and appointing a good Cabinet is also crucial. The POTUS often has no expertise in a subject, so he/she decides based on them. It has forever been true that the appearance of a potential leader was important. Even more so in the television age. Nixon sweating on TV. Dukakis might have had amazing policy ideas and an ability to push them through, but he just did give off leader vibes.
What clear policies have candidates in the past 30 years had?
I believe Harris has no more radical ideas as Obama had. She will have to work with the rest of her party to get things done. That is politics.
And as was posted above, her opinions on issues have already been made clear.
I say this as a negative thing. Walz as VP would be great on that front, but the Dems bow down to corporate interests and Israel, so I am convinced they will go with Shapiro.