LoMaps usage: country vs regional maps and download process

I have two questions that I couldn't find answers to online. Information: I have been a "Gold Member" of Locus Maps for a long time and exclusively use offline LoMaps for my outdoor activities. My first question is regarding the effective use of country maps, such as Germany. Do I gain any additional information by downloading and using regional maps like "Schleswig-Holstein" or Hamburg, or is all the information already included in the overarching country map? I am specifically referring to the LoMaps.I need your feedback on this to optimize the downloading and usage of the maps.

My second question is: Why do I always have to download elevation data and offline navigation data separately? I would prefer a simplified process where I can just say yes to downloading everything at once! There have been instances where the "Offline Routing Data" was not available because it was forgotten during the download, which prevented me from using this function outdoors.

Thanks for your help !