This post is actually a comment I made about Ben Myers' wonderings, he finds it incomprehensible that far more is written about Moltmann than Pannenberg. Although I wholly agree with him that Pannenberg is a "better" theologian and his theology perhaps is more sophisticated. However, more than a good theologian there are reasons that I believe scholars and theologians find Moltmann theology worth engaging for.
Moltmann's theology has the “ability” to dialogue with other theologies than any other contemporary theologians (as far as I am is concerned and I maybe wrong). Some scholars would claim that his Theology of Hope is the forerunner of theologies of liberations. And I agree that after 40 years of publication the book is still relevant in our context. He is able to dialogue with third world theolgy with TH and Crucified God. In fact, the theology of struggle that is developing here have taken a lot from Moltmann's works. His pneumatology is able to dialogue with Pentecostal/Charismatic issues worldwide. Although, it does not resolve the problem, he paved the way for a theological discussions regarding healings, speaking in tounges and other Pentecostal issues that were making a problem in many denominations. Also, his theology is able to dialogue with many issues in practical theology.
His relational trinity in TTKG makes sense to us than any other books because of our cultural values with regards to relationship. This work is something we can understand. His panentheism i believe speaks volume to people with animistic culture. And many more... I guess
As Christians in Asia and the third world continue to outnumber Christians in North America and Europe... I guess Moltmann's theology will become more and more relevant.