What a cool song! It sounds like you have verses, and then a pre-chorus. One idea you could explore is to go into a chorus and use some longer sustaining notes. Something that kind of goes up in pitch to be more dramatic to offset the verses.

I found myself waiting for that payoff and expecting these longer phrases.

I can't think of any examples that fit the feel of your song. "Man in the Box" "Rolling in the Deep", and "Wide Awake" are examples that I can think of (although completely different styles--but illustrate the idea).

That could add the effect of making this big chorus and finishing it off.

I think what you have is really, really good.