Wow, I can't believe nobody has mentioned that his request is covered by doing an updated Destroyer Command.
Remember that lovely little companion game to SH2? I for one LOVE the idea of surface warfare, and would just go nuts if UBI did a companion/stand-alone for SH4 like the old Destroyer Command/SH2. Could you imagine the battle lines being drawn on the multi-player servers?
If the cross-game link worked out ok, the obvious high quality detail and imersion that SH4 brings to the table would be glorious in a new surface game. Talk about creating the end all of WW2 sims.... wow! I'll add this to my evening prayers.