From what I've seen this is what I think would be the best patchwork for next year to be successful.
1-Double dip in best offensive linemen available 1st and 2nd.
2-Free agent LT with a short deal for immediate improvement on the line, while working in one of the draft picks to get reps through a full season to be ready to start full time 2016.
3-Safety help to replace the old and terrible we have back there and to give us another option besides Boston and Lester
4-WR pickup hopefully in the 4th.
5-Some sort of scatback to help with WR/RB combo and possible return man a la sproles.
6-DE pickup somewhere in the draft again just incase it doesn't get done with CJ.
1-Williams gone. Steward/Fozzy/Tolbert should be the RB combo from here on out, and eventually get rid of Stewart for a Fozzy/Tolbert/new draft scatback
2-Veteran WR help through FA.
3-New OC & Special Teams coach at minimum. As most of has said, JR doesn't just fire people, so why not give Rivera a better shot and if he fails next year its completely obvious the #1 problem.
4-DB's...Put White on the bench, have your starting DBs be Norman & Bene...with Jones or Dockery in Nickel.
Thats my wish list, would be great if even 50% of that was accomplished next year.