If Gore went down we would probably see some sort of Hunter/Jacobs timeshare but with the usage patterns this year it seems they don't prefer Jacobs over Gore in any situation.
IMO we'll see a lot more Gore, maybe a little bit of the other guys to spell him. I think they would like to get James on the field, but it's tough. His best fit is on 3rd down but Gore is so good at picking up rushers in those situations.