Umm, quit hijacking the topic from shipping to trains.
Shipping could definitely use a boost. Id like to see convoys (task forces w/e) without a carrier attached. Just maybe a few destroyers to escort the cargo vessels. Maybe make a bunch of them and term it a 'seaborne' start target? Each one you sink drops the strat by x%.
Or maybe just a cruiser and destroyers (think shore attack without having a carrier run aground) or a large number (think 20) of destroyers and frigates. And give them more manned 40mms and less manned 5". The 5" seem uber deadly imho.
Id like to see some more use of the torpedo bombers actually used to torpedo stuff.