I like the Enhanced Navigation Map (
http://www.subsim.com/radioroom/down...o=file&id=5265), It gives you more detailed depth information when in the strategic map.
You’re probably got your hands full learning how to fight the Los Angeles right now, but once you have, there’s the New Playable Subs & More mod (
http://www.subsim.com/radioroom/showthread.php?t=231690). It’ll let you play a large number of other nations subs, and there are 3 campaigns as a Soviet Commander