To be honest, myself - I'm not really interested in DC2. As much as it might be a big plus for multiplayer, not everyone plays multiplayer. I don't. It's the single player campaign that brought me to SHIII in the first place.
And personally, I don't think I'm very interested in an ASW game - because the campaign structure of it would have to be quite different from SHIII. If playing a submarine in a campaign is often hours of rather plain searching, an escort campaign on the same engine would be even less inspiring. Unless you jack up submarine encounters to unrealistically high levels. And, again, mind you - I have a strong preference for patrol simulators rather than attack simulators. The immersion factor, for me, goes through the roof if the game lets me do full patrols instead of the engagement part only.
However, I would love to see a surface simulator using an improved version of the SHIII engine - but rather than commanding escort vessels, I would have liked it to be a battle squadron command game. Those would make for really exciting career-type games, I think, and their patrols would inevitably be memorable.
Just my two non-multiplayer, patrol-simulating cents cents
