What will the season look like without grade and Judd?

Apparently grace will not be in s5 and Judd I heard may only be a reoccurring character. What do you think the new season will look like without this power couple? How will they write them out? I heard Wyatt will be the main dispatcher now. I love that family and it will be hard not to see them together anymore.. also I heard rumors that this may be Lone Stars final season.

Thoughts?