SH4 and 3 campaign was open waters with scripted shipping based on what they programed during the time period.
With SH4 you also had missions included in your campaign that gave you somewhere to go and something to do - go to grid XXX and wait XXX time. If you wanted you could just wonder off and chase contacts that were reported to you on the map or sighted by your crew never even going to your patrol area.
With SH5 it sounds like they have taken this to a new level. Not only can you just patrol anywhere in your theater of war, but now there are objectives that can change the outcome or reaction to your actions causing the AI to respond in a different way.
Just the ticket we needed to give this game the next step it needed.
