Why all of them?, surely you mean just 1 model that can be any of the 5?
That way you can flesh out the Germans a little more.
And warspite should be top priority, you'd get a ton of sales off war at sea players as well since it was such a rare ship to get, its a no brainer.
Then finish the Germans off, as it stands you can't play games with the models available, and its not like this project is one or two weeks old