I know this is a really old thread. But I just felt I had to add my 2 cents to the discussion. While I didn't read every comment on the now 17 page long thread, I did see one major theme. And that's having a game that isn't all buggy! I remember SH1, and how buggy that was, ships that would sail right onto land. Doing a real time stalk on a tanker convoy only to suddenly have the ships be sticking up and down.
If anyone from UBI is possibly lurking here. This would be my suggestion. Make solid core game that would include both Atlantic and Pacific campaigns for American, English, German, Japanese...ect sub fleets. Then UBI or any other developer could then offer add-ons for WW1, Cold War, Modern Day. Combined with a flexible, user friendly editor for moding I think would work the best.
So there's my 2 cents worth, if anyone cares. Silly me, last time I programmed anything it took me 2 weeks to make a commodore 64 do twinkle twinkle little star.
