JC performed pretty well with worse lines than the Chiefs had this year. They need a #1 RB with Ware as an alternative. This class is loaded with RBs.
Not many players are as good as JC. Larry Johnson had good numbers until KC's offensive line was dismantled (free agency losses, and sudden retirements). JC was not a beneficiary of a good OL. It was one of the worst, and yet he was able to make huge gains. He was similar to Barry Sanders in his ability to make the most out of a bad offensive line. In fact, Detroit may have had a better line than KC. JC has been one of the best in regards to fewest negative plays, while BS (as good as he was) was one of the worst in that category.
We were spoiled. The Chiefs have had a long line of good running backs. Abner Haynes, Mike Garrett, Curtis McClinton, Ed Podolak, Joe Delaney, Christian Okoye, Barry Word, Marcus Allen, Priest Holmes, Larry Johnson, and finally Jamaal Charles. The other thing to know is
Charcandrick West was beset with injuries for most of the season. He was really only healthy for a few games. Spencer Ware started hot, but when the Chiefs lost Ehinger, Ware's yards per carry decreased by a full yard (Zach Fulton at LG). Ehinger was not brilliant, but much better than I expected expected he would be. Zach Fulton was not very good, and Jah Reid was abysmal.