For me, the most painful part of Dexter was the lost potential. I think all of us watched season 1 thinking is could be one of the GOAT shows of all time.
Perfect match of character and actor. Perfect setting in Miami with it and Cuban culture bringing a character in its own right.
All they had to do was not change the character and not make the show about whether or not he gets caught.
Instead make it about his interactions at work with his normal cases (blood spatter is interesting), and the interactions at night with the other serial killers.
I would have watched 18 seasons of that.
I agree with most of what you're saying but there was no way in hell this show would or should last past 6 seasons at most. Eventually nobody ever catching on or the people that did catch on dying would get old.
Fred.