You've got his 3 volume Systematic Theology. I'd like to see some more Pannenberg, in particular:
Basic Questions in Theology (2 volumes) - Augsburg Fortress
Volume 1 Table of Contents:
I would also add his Anthropology in Theological Perspective.
Both are worthy suggestions!
This post was from a long time ago, but this title is available now:
https://www.logos.com/product/4908/anthropology-in-theological-perspective
Bump for more votes:
https://feedback.logos.com/boards/logos-book-requests/posts/basic-questions-in-theology-volumes-1-2