There are three main differences between an Outpost and the Open World Map:

• Outposts are smaller.
  
• They have only one biome.
  
• Resources re-spawn.

As far as outposts being a place for building without fear of animal molestation, that's not true (unless you set the difficulty level at Easy). With that aside, the map is fairly large, IMO. The open world maps are humungous, but how big do you want them to be?

There are three main differences between an Outpost and the Open World Map: [list] [*]Outposts are smaller. [*]They have only one biome. [*]Resources re-spawn. [/list] As far as outposts being a place for building without fear of animal molestation, that's not true (unless you set the difficulty level at Easy). With that aside, the map is fairly large, IMO. The open world maps are humungous, but how big do you want them to be?