Is it too funny to try to figure out little things while deeply confused with the finale? 

1, the blooded face guy in the cell was not among the people been brought up to upstairs by Andy, so its confirmed nobody sees him but Chad.

2, the body at Carrie's couch has a bloated belly if I remembered correctly, something bursted out of him as well? Similar as Bob? 

3, the electric pole No. 6 moves around with Laura or Laura alike i.e.Becky? It's in Odessa near Laura(Carrie)'s house. 

4, Diane is always a spiritual thoughtform existed in Cooper's mind. Diane's tulpa was created by Cooper's mind or by Mr. C's mind, either ways. If we taken all the Buddahism into account, as there is no gender difference in Buddahism's higher forms, might be able to explain why Diane just suddenly gone, it's just another self of Cooper, Rechard and Linda, two birds one stone, they were formed from the same stone/seed? hence, in the note Diane said: Don't search for me.

They had sex, but Karmamudra in Buddahism is way beyond physical sex between male and female. It's more of a way to attain enlightenment. ( I have no idea what I am talking about) 

But in the 1st and 2nd season, whoever at FBI received all the messages from Cooper does respond to them, which is why earplugs were sent to him.  - I had to add this part, otherwise can't close this argument at all lol.... Or maybe I read too much into it. 

5, why giant didn't lock Mr. C up in the white lodge? Maybe the only way to destroy him is to put the ring on his finger and send him back to black lodge, and let Freddie punches Bob into pieces...

6, sheriff Frank doesn't have chemistry with anybody, that was not a good cast decision. 

Just try to make sense, but again have no attempt to achieve that.