Question: What Kind Of Book?

After a far too long break from my serious writing pursuits (though I did lose two partial manuscripts to a computer crash), I have finally begin work on my second book. For lack of a working title, I will refer to it (for now) as:
Emergent Voyageurs:
Reflections from the Missional Frontier
My hope for this book is to explore the emerging missional movement through reflections from my own life experiences. From my early years in small town Canada to various nations worldwide to the inner city community I now call home, I want to explore, from own journey, the greater journey of the church in an ever changing and emerging world. I hesitate to think my life is interesting or worthy enough a source for such a book, but one must write what one knows.
As I am still at the beginning stages of the project, I would very much like some input from all of you. While the book will deal with some difficult and deep topics, it is not being written as an “academic” theology book. That being said, I want the book to engage issues that are close to the hearts of other people, like yourself. So, in a book like this, what topics would you like to see address in it? What questions do you think need to be addressed, if not fully answered?
Let me know. Thanks!