Yep! They showed a lot more of MK than I expected, I hope that's a good indication of how much screen time he'll get and not that they put all three of his scenes in the trailer, LOL.
I even liked Affleck's Batman and will be glad to see him return, but I pretty much like all takes on Batman. It's not an easy role to do. They could have gotten Christian Bale and CGI Adam West and I'd have been blown away.
I don't know if this is the same trailer that was on the Super Bowl, but here's one for you https://www.youtube.com/watch?v=tlyZdshB1tE