18. Companion Sandbox Mode - This would be intersesting
It has its issues, unless Obsidian would add the sandbox option through dialogue and keep the original wait command. Having your companions walking around in Sandbox mode can get a bit dangerous if you wanted them to stay still in a dangerous location.
The only reason I didn't do it is because I didn't want to do anything that would conflict with other mods that alter the companions in some way. If Obsidian would do it then it wouldn't be a problem.

With that said, I don't think they should include any mods. Patches should fix things, not tweak gameplay mechanics unless something is horribly wrong. And they would definitely not use player made content for patches anyway.
