I am not a anti JJ guy, in fact I like him alot. However this team needs a fire lit under it and Marion Barber can help supply it.
Not saying to bench Julius, but I think allowing MB3 to come out rolling over people in the first quarter would help set the tone and give this team a much needed boost. You can rotate the two after the first quarter.
Jones is a nice back, he can have moments of brilliance, but he seems to go down way to easily and plays with little fire. It's that kind of passive culture which needs to be changed in my humble opinion.
Other changes I would contemplate:
Starting Burnett or at least giving him much more PT.
Allowing Watkins back on the field especially in the red zone. He seems to be much more comfortable closer to the endzone and his height would help.
Start Jay Ratliff in place of Canty