I agree that last season was better, but that's to be expected. That first season was something rare and special, and it's very difficult to capture that again.
However, I really enjoyed the first ep of this season. It was an intense slow burn, which I don't mind as long as it seems to be heading somewhere and this does.
As far as having seen all these character types before, that's true, but remember that most of the character's in season 1 were like that. Even Woody Harrelson as the plodding, philandering detective was a trope. Cohle was the one truly unique character in that one, and he stood out all the more for it.
Rachel McAdams is gonna be the one to watch this season.
There is something deeply broken in her...the obsession with blades, the impulsiveness of staging a large raid based on a rumor, the refusal to believe her sister is doing ok, her obvious daddy issues, her behavior at the casino, etc etc. Plus whatever weird sexual stuff that freaked out the dude in the beginning.
She is going to be the deeply complex character who is going to have the most interesting arc, I think.
But even the stuff with Colin Farrell and Vince Vaughn is not as simple as it might first appear. Usually, the crime boss and the corrupt cop despise each other. But in that scene at the bar, there seemed to be some deep, genuine friendship and concern. Remember what they bonded over...Vaughn helping him find the guy who raped his wife. I think that relationship is also gonna be complex and interesting.
With the CHP guy, I'm not sure yet that it's just the same ol' PTSD thing. When he was in bed with his gf, she asked about his worst scar and he told her it happened before the military. He seems like a pretty fucked up guy, and it also seems like he was that way for a long time.
I'm really looking forward to the dynamic between Farrell, McAdams and the CHP guy as they investigate the murder, which does not seem to be related to the high-speed rail scam.
This season is written by the same guy who wrote season 1, so it's probably going to have some really good moments as well.