I feel like Finn was robbed. He should have been a Jedi.

I'm sorry, but you don't promote a movie with pictures like these and end up making the featured character a relatively unimportant character that loses more and more of his importance with every new film.

I also think Finn is a better and far more interesting character than Rey.

Imagine having a deserted Stormtrooper joining the Resistance to fight his old comrads and eventually becoming a Jedi. WOW! This could have been an amazing story.