The problem isn't that Skye doesn't change, it's that Skye never changes. This is just more boring writers want us to give a shit about their mary sue when nobody cares.

I care about Coulson when he is playing the role he had in the movies. This frowny-face-man routine however can fuck off.

It's amazing what happens when one of the only decent actors on the show gets given screentime. God bless Chloe Bennet for trying. She is extremely trying. Unfortunately she simply can't carry or convey emotion the way the writers seem to believe she can. I suppose this is what miscasting looks like. And they can't…

It's based on the principle of Schrodinger's Cat. So long as he can't see anything, who is to say he isn't in that place he wants to be?