Simple.
I want to be able to control both topside and sub vessels. All vessels playable. If you can do that, there should be no reason to limit it to the Pacific only and you could play as either an Allied or Axis commander, German or Japanese or American or British or Russian, anyone.
Creating new ship/sub mods via a reasonable SDK released to the public.
A more serious mission/campaign editor and much more complex scripting abilities. Coming from the OFP community, SH3 is totally lacking in this area.
And that's all.
