yes, han. i agree. most important to me seems a realistic harbour layout and the real fitting of these well known bases. this should be the main objective...
what about historical buildings to add? now, as we can import new units, we should aim at a realistic looking harbour silhoutte and maybe some famous buildings. for example the castle in kiel or some other historical buildings...
and for historical correct cranes i recommend to search for historical photos from hamburg or kiel.
here:
http://www.geschichtsspuren.de/artik...e-hamburg.html