Incase no one knows, on Eden, the outside box can be shot, and it drops down exposing the person, but puts up side walls. They go back quickly. The 2 diagonal things in the bottom of the map also can be shot to extend 1 half of it. So you can jump from the first floor up to top of security/top catwalk. It's pretty badass.

I hope this means there will be a forerunner map that is CONSISTENTLY changing back and forth on like a 30 or 60 seconds interval. I wanted Haven to do this SO badly (change line of sight, not the actual structure of the map).

This alone seriously has me excited.