The Germans are slowly trying to eliminate their dead- end stations, but it’s a very long and expensive job.
Given that many of the big city stations are dead-end (I can think of Frankfurt, Stuttgart, Munich... there may be others) this would be a very big job. Questioning whether it's really worth it at the end of the day, as German terminal stations seem to be able to cope with large numbers of trains per hour as it is - but I don't know.