So I think a freezer that effectively halts the spoil timer would be cool (if it doesn't halt it then makes it stupid slow ie raw prime meat spoils in 100s of days slow) It would require you to thaw the item out before using it again.
As for patrol mode, a bit like wander except you can create a specific path for the dinosaur to walk. If it comes off that path to attack an enemy it will automatically go back to patrolling. When you enter patrol mode, you have to take the dinosaur through the patrol one complete circuit either by riding or having it follow you. Should also be able to do this for underwater creatures as well