Re: Poe and Finn
After the first viewing, I had a similar reaction to many of you - no character development, and I don't really care about either one. And, that bothered me a little. When I think of the original trilogy, you had Leia, Luke, and Han - and those characters were intertwined, and everyone else orbited around them. It was easy to move the story around them, and it was easy for the audience to root for them.
In this trilogy, we have the three main characters - Rey, Poe and Finn, and 2/3 of the way through, and they barely know each other, highlighted by the awkward introduction by Poe at the end of the movie. They try too hard to make Poe and Finn buddy-buddy, but in reality they have very few shared experiences - compared to Luke and Han.
But, while Poe and Finn did not really get the screen time in this movie - they did "grow" as characters. Admittedly, we needed to Leia to point it out for Poe - first when she demotes him and says they had a bunch of dead heroes, but no leaders - on the failed bombing campaign; and, then in the end when she tells the rag-tag group to follow Poe - indicating he was becoming and thinking like a leader. I assume Poe will be a primary Resistance General in the next movie (and probable love interest for Rey.
Finn was even more subtle, but if you recall he grew up in the First Order, he had no notion of "humanity" - that is what Rose taught him when she "saved" him from the cannon.
We spent a lot of movie time on Rey's (and Kylo's) development - and I think it was really good stuff, so we had to give short shrift to Poe and Finn, but there were signs of character development, and I expect both will play a bigger role in the finale.