The 5.7 ft bed is still small. It is a lifestyle truck not a work truck. Even when using a 6.4ft bed I feel it almost isn't quite big enough just doing things like fishing, camping or hunting.The bed is only 7 inches shorter than Ram crew cab.
But jeep had offroading in mind more than bed utility.
But like @2015er said it would be nice if they offered a bigger bed, it would be handy even when just fishing, I could throw my poles back there for short drives between fishing spots, couldn't do that in a 5ft bed, can do that in a 6ft bed as long as I put them in diagonally.