I'll say this about the "Dale Cooper" in this episode. He's not just a linear extrapolation of the quirky, one dimensional FBI man of years ago. He's more the product of someone who has had dramatic life changes and choices over the course of 25 years, i.e. like real life. And in keeping with Kyle McLachlan's acting weight, he is carrying a lot of the film.
Log Lady appears to have been filmed "in time" before the actor's demise, but her illness is evident in her scenes.
Some actresses with girlish charm in their twenties keep it on into their fifties, but Sheryl Lee (Laura Palmer) doesn't seem to be one of them. She and Dale Cooper are in dream sequences in the red room once again, but they don't work as well.
So the thing about Dale Cooper (or whoever Kyle M. is supposed to be...not clear)
is he's now a real "heavy", a very dangerous guy, who has various shady thugs people working for him and "gun moll" style girlfriends, all of whom are under constant threat and intimidation by him. Picture below. He wears a leather jacket, long hair, speaks in a low-pitched gruff voice, his scenes are all in seedy hotels and restaurants and rustic lodges, and has a bit of a southern air to him, ...someone joked that it's "Twin Peaks meets Duck Dynasty." So he seems like a criminal, but at the end of episode one he gets on a computer and logs into an FBI portal, so he must actually be in some kind of deep cover.
Log Lady is sad to watch, as you can see from the pic below, she really was very ill when they shot her scenes. She's holding the log in that pic. She is instructing "Hawk" (Sheriff Truman's spiritual American Indian deputy) with clues (i.e. what her log is telling her) about where to find things, over the phone.
Anyone of our age group has gotta detest the actor who plays James Hurley's ability to defy age! 23 yrs old then, 50 now, he looks like a hipster single guy in his 30's.
One more thing, there are lots of clips from the original season 1 series, and the very opening clip is original footage of Laura Palmer in the red room saying "I'll see you again in 25 years." Yes, that really happened!
They also re-enact, in their current characters, a famous bit of Red Room dialog from season 1:
Cooper: "Are you Laura Palmer?"Laura: "If I feel like I know her, but... (in agony) sometimes my arms bend back."
Dale Cooper, the heavy
Log Lady, passing on clues from her Log to Deputy Hawk
Log Lady as we knew and loved
James Hurley, defying age