Like many of her posts it's old news... No begrudging necessary
My original point was that although, as you pointed out, the Germans managed to solve the rape case they were aided by a forensic connection between the criminal and the crime scene.
Although you think they may solve the McCann case, they will, as I pointed out, not have forensic evidence. Nor does their public appeal seem to have been helpful.
Unlike you, I think they have a lot to do. I'm sure they are aware of the difficulties of no body murder trials. I could only find one example in recent years in Germany. The victim was Rudolph Rupp and if you like miscarriage of justice cases it was a prime example. An associated case was the prosecution of a scrap dealer, Ludwig H., who was allegedly threatened at gun point when he refused to sign an interrogation protocol. It seems the Germans are as bad if not worse than the Portuguese when they have a suspect in their sights.
https://de.wikipedia.org/wiki/Todesfall_Rudolf_Rupp