I always thought it would be cool if they expanded upon different parts of Blizzard world for different types of modes.

http://overwatch.wikia.com/wiki/File:BlizzardWorld_-_Map.png

As you can see from the map, the actual Blizzard World we’re playing is only a section of the entire park. Imagine if they opened up another part of the map specifically designed for FFA or have another part of the map be designed for 2CP.