Hi,
Really like the designs you've brought up here. However I'd have a think on how you would like this line to be different to what we have in the game.
Thoughts I'd consider (become more outlandish as you continue):
AP only (like their British cousins);
a German SAP;
a magazine reload system;
make this a kind of support class of ship: airdroppable DCP, minelaying, or healing;
a new incendiary type of ammo which deals more damage the more hits you get
Food for thought.
Once again, really like the ships and the idea of a German light cruiser line.
Thank you for your work!