Halden discusses the "best Protestant ecclesiology" over at Inhabitatio Dei. Can't do much but agree wholedheartedly and lament my lack of time to reread Sanctorum Communio. Especially with the glut of ecclesiological work being done today- good, bad, and truly ugly- Halden's post has me thinking about what sort of Protestant work is in line to follow in Bonhoeffer's footsteps. Since Lumen Gentium we have seen some really great stuff coming from Roman Catholic theologians. I don't know if the same can be said regarding Protestantism... John Webster's essays in Word and Church come to mind as an exception. Often, even what is good in Protestantism is greatly indebted to Catholic or Orthodox thought these days (not that that's a bad thing, but it does demonstrate a lack in our own tradition).
Here's a link to Sanctorum Communio at Fortress Press- anyone who doesn't own it needs to get over there and remedy the situation. It's currently 20% off, so you have no excuse.