I don't know much about Hans Joachim Iwand, but I do like this quote of his (passed along from the Rev. John Frahm):
"An evangelical church which looks upon the doctrine of justification by faith as a self-evident banality one no longer needs to dwell upon because other problems are more pressing has robbed itself of the possibility of arriving at solutions to such problems. It will only tear itself further apart. If the article of justification is removed from the center we will very soon no longer know why we are and must remain evangelical Christians. Then we will strive for the unity of the church and sacrifice the purity of the gospel; we will expect more from church order and government, from the reform of ecclesiastical office and church discipline, than these can deliver. One will flatter piety and despise doctrine; one will run the risk of becoming tolerant where one should be radical and radical where one should be tolerant - in short, the standards will be skewed and therewith also what is necessary and right in all reforms for which we struggle today will no longer be comprehensible."