Spidey looks crappy. Bad cgi, costume is a step backwards after the pitch perfect suit in ASM 2 and what the fuck is with the eyes? Spidey's eye's don't change. When did Black Panther get the ability to run so fast and be bullet proof? He was just a guy in a costume last time I read an adventure with him.
So the best thing about this trailer is that Marvel Studios is finally giving us a film with the tone of a DC film. Their last film that did that, The Winter Soldier, is considered by many to be their best film, it's certainly their most respected film. So this is a plus and it's the tone they should've been taking since day one. I'm tired of jokey films where every hero is spouting snarky quips non-stop with villains I can't take seriously. The downside is that we've seen Marvel heroes fighting in both Avengers 1 and 2, so there's nothing in any of the Civil War trailers so far that has elicited anything other than "meh" and boredom from me.
I think I'm just getting tired of Marvel Studios product, the only thing from them that I'm interested in is Dr. Strange. I'm more excited for BvS and the upcoming X-Men film.