I have forgotten so much of episode 7. And I'm not nearly as Finn-sensitive as you are. It would have been interesting. I get they were going for an ensemble thing there but a little more backstory and continuity would have been helpful. It's difficult when you have so many main characters, old and new.

Fandom made up what canon didn't give them? Whether it made sense or not? What?! ;-)

One thing to face is no matter who wrote the canon Finn was never gonna get more attention than Rey, by the writers. Heck, I feel even Finn knows that. He's okay letting her take center stage. So I'm okay with it. Rey becomes the foil for Kylo Gen. Rey becomes a lot to him.

No, no school! No more training Jedis! I just don't think they are good at it. Broom-boy is way better off on his own.

OT: Did I ever tell you the actor who portrayed Finn was at the screening I saw in NYC of Episode 7 on opening night? He came to the front afterward and we all cheered for him even though we barely knew him at that point. I remember his British accent throwing me off and hoping we had been a good audience since he'd been there watching the whole time! This is why it is sometimes good to go on opening night. :-) You never know who might be there!