The viewscreen “system” is implemented, or more exactly the source code needed to do more interesting things with it is in place. It can’t currently take damage or go offline, so there’s no functional change. It’s a bit of code work that needed doing for the sake of correctness and to ease later improvements.
Life support is now implemented and functional, and damage to it will make crew members start going down.
Computer is next, which means crew interaction is next. Long overdue!