I really like the suit, the textures, and the overall vibes going on in the reveal. I always loved a purple/pinkish sky. I haven't read much of the reactions, but my first reactions was how, I guess you can say, "moody" it is. For a first reveal, I really thought they'd go the complete opposite direction of what they showed. In and of itself, I like the curveball. I was totally expecting a more bombastic; classic Superman reveal with insane; sunny color.
That said, I think Gunn's Superman WILL be that. The official reveal is just an interesting choice as far as I look at it. I like interesting.