I think the show was/is better than we realize it was. The awesome thing about the show is how it gave us tidbits. It let us try to figure it out and see where the light was. It gave us each a ton of rope to run with our ideas and thoughts.
In the end, it couldn't be perfect for us. We all wanted our thought/plan to be the right one. Whether it was Marty or his wife or her dad or whatever. But, the end was good. It just was what it was. Didn't have the enormous, crazy twist that when you really reviewed things didn't make sense.
Only thing I have issue with is that Cohle couldn't have survived that wound. No way. We have all seen Reservoir. Gut shot/cut like that, you are done. But, it gave him a chance to recover (himself and his life).
I liked it.