I love the dynamic map elements they've added - the shield in the middle of Zenith, the sight line-limiting waterfall on Shrine. It just looks fantastic. It's all stuff that Bungie [i]wanted[/i] to do in the past and that's what makes the Master Chief Collection such an excellent tribute to the past - you've got the original experience that we've all played, and you've got the version that Bungie wanted to make but couldn't (because Halo 2 was in the ninth circle of development hell).