Hey Mad. I've been playing this for way too long already and am stuck in book 2 right now. I am finding it fairly boring also so far and very aggravating. It is like one big maze. Try to figure out where you are and try to figure out how to get where you need to go, over and over and over. I've already been playing for 17 hours and the actual gameplay has probably only been 1 hour. The rest of the time I have spent wandering!
I suggest watching Dilandau3000's YouTube playthrough.https://www.youtube.com/playlist?list=PLjjNZRzFam-qWpmjESYEUr9-YQUhBjjaP
You won't miss any real classic adventure game gameplay because there isn't any. Unless you enjoy wandering around looking at things, you won't get much out of trying to "play" the game.
I did, however, enjoy my replay of The Longest Journey.
As far as I'm concerned, The Longest Journey is a standalone game with no true sequels.
Dreamfall and Dreamfall Chapters are a retcon, with changes made to characters and places just for the sake of being different -- making it look like what you thought you knew from TLJ (and even from the first Dreamfall) was wrong. As far as I'm concerned, the Dreamfall games take place in a different universe.
I've heard that they had less money to work on Chapters than they did for TLJ, and it shows in the lack of real gameplay, problems with pacing, rushed endgame, and incomplete and/or conflicted explanations. I don't expect "everything" to be explained, but they crossed the line between "let the audience decide" and "I don't care anymore BS" too many times.
I don't think we'll ever get the "Longest Journey 2: Further Adventures of April and Crow" game that fans wanted after playing TLJ. Even if the "Longest Journey Home" game is made (which looks doubtful), it won't be in the spirit of the original "The Longest Journey." Ragnar Tornquist has shown he can't make that kind of game any more.