Wasn't sure how crucial any of the vignettes would be in this, but I saw some creators so I grabbed it anyway. More good than bad, by a long shot. Really good actually.
Standouts for me were, well, there was a lot of good art, but off hand, first thing that comes to mind; Rucka's Batman/Wonder Woman story was nice even with its highly structured, almost Tom King-ish narrative and page layouts, but the part that really comes to mind is the welcome return of Bilquis Evely to Wonder Woman, and seeing her tackle Batman. My favorite art of the issue.
Denny's story was really nice because it's brief, bad-ass, feels like 70s Batman, doesn't overplay its own hand, and the art is utterly gorgeous. Contemporary Bat-costume and Batmobile, too, which was nice. I really like that Batmobile and it renders well.
King and Francavilla's Sgt. Rock story was ... well, dour. But kind of oddly heartwarming, too. Also gorgeous.
Landis's Superman and Lois story was easily the most heartwarming and "put a huge grin on your face". ALSO gorgeous.
Lot of good art in this comic.
Priest tells a Deathstroke family christmas album story that fits seamlessly into his run.
The Barry & Wally one was nice. Not my favorite, but I wasn't unhappy with it. The Swamp Thing one, too - lovely two page spread in that one, cute with the mistletoe and pine tree. I admit I kind of glanced the Teen Titans one and didn't pay it close enough attention.