So, now they are getting to push Jisbon story line?  It is safe to say that the show is done and done.

First, the writing is not that good anymore.  The most important episode, Red John, was wasted with banal chitchat and pointless chase scenes. 

Second, scene development is so slow as to be glacial at times.  If you watch the scene where the church lady attacks PJ, you will get bored.  "Stop, I am with the police."  "No, you are not."  "Yes I am."  "Well, you don't look like it."  "Well, but it is true."  And on and on.  You really get bored with the repetition.  The actors seem bored repeating those lines.

Third, there are way too many characters on the show now.  Not to mention locales.  How are they going to keep them relevant with the glacial pace of scene development?  I fear they will have to resort to introducing characters by subtext on screen: Risgsby enters the scene, we will read in small letters, "Wayne Rigsby, former CBI agent and old friend of Patric Jane.  Now, runs own agency."

Finally, now that all that is left is murder of the week type episodes, those are no longer developed enough to the point of being semi-interesting.  They are going to be so bad as to be inconsistent and illogical within the span of 40 minutes (vs. 5 seasons with RJ) and resolved haphazardly.  (As was seen with the bogus fertilizer clue from the last episode.)

Either we as the audience have given the show way more leeway than it ever deserved, or they are intentionally making it worse with each show.