TFA has ruined my productivity every day since Oct. 19, and since I work at home, I'm pretty much on my own for how much time I watch clips over and over.
On the Finn vs. Trooper weapon; I have 2 thoughts - 1) we know Finn has the blaster in most promo shots, so he was probably disarmed when he, Han, and Chewie are captured, but the average trooper probably isn't thinking about looking for a saber on a guy that no one thinks would have one.
HOWEVER, if those troopers are personally attached to Kylo Ren, and Kylo Ren is perhaps hunting for Luke Skywalker, it would make sense for his troops to have weapons that could at least block a lightsaber, because stormtroopers with guns and crap armor isn't going to cut it.
That thought just made me realize, we never actually see a stomtrooper killed via lightsaber in the movies. Obi-Wan and Yoda dice a lot of clones in ROTS, but the only time Luke fights them after getting his training is when he arrives at Cloud City, and he uses his gun, what a puss.
And speaking of Cloud City, Luke has a vision of Han & Leia in pain and tells Yoda, "I saw a city in the clouds." OK, so did he go onto Rebel Google and type in "city in the clouds" to get directions? I imagine him telling R2D2, look up "cities in the clouds" and R2 being like "OK, here are the top 8 million results of places like that'.