I've been working on the nuances of the word "gospel" in Matthew, Mark, and Luke recently, and I was just thinking today how much I like the gospels. I've taught Acts through Jude in my teaching life and only presented sparingly on the Gospels. I hope maybe Wesleyan Publishing House will let me follow up my three popular level Paul books with a couple books on Jesus and the gospels.
There is so much depth (of course, it could be in scholars' heads rather than real ;-) when you dig down and begin comparing gospels. It also can get very sensitive since most simply take the gospels as video recordings. But I find it fascinating to see how each gospel writer seems to have tweaked sayings and the presentation of events and their order to bring out particular themes. And I find it invigorating to see as it were layers of the early church from Jesus to John, somewhat like an archaeological dig.
Again, speculation on reconstructions require great caution, since it is so easy to let one's imagination go wild. But I think a popular Christian audience (not to mention pastors) would find a journey through some of this territory fascinating, indeed that it would make Jesus and the gospels come alive in 3 dimensions.