• Dale Cooper would have been rescued from the Black Lodge much sooner, either by Sheriff Truman or Major Briggs. 
• We would have seen more of Bob.
• We would have seen Audrey in hospital. 
• The Log Lady would not have been dying. 
• We would have seen Wally Brando as a baby. 
• No Frank Truman (Harry would have still been around).
• Leo would have been found dead in the woodland hut after being bitten by that huge spider. 
• Ben would have been in hospital with his head wound.
• We would see Dr Hayward in a prison cell after being arrested for attacking Ben (because physical assault is a crime even if you're a respected doctor).
• Pete would have got his truck back.
• Donna would be receiving counselling after finding out Ben is her dad.
• Ronnette would be on some kind of serious medication due to endless nightmares and screaming fits due to her PTSD from witnessing Laura's murder. 

Well I think Major Briggs was going to help get the good Cooper out of the Black Lodge was one plot line.

More hair!  😉

More Bowie!

A young Mr. C., who perhaps still could pass himself off as Dale. The murder of Annie.

I understand that the script had Leo being rescued. Surprised Eric da re has not been in the show, since his mom seems to be (associate producer or some such title).