Setting something on gnome (which Unity is based from)? Let's not be naive :)
Edit: </sarcasm>
I might not like that but there are valid reasons to have dumbed down options. And if I'm not mistaken you can get some configurability out of 3rd party tools.
People have tried to package Unity for other distributions, but those efforts have failed. One of the main problems was the patches that Canonical applies to GNOME libraries (to make Unity work) and to applications (to make them integrate with Unity). If someone wanted to fork Unity they'd have to find a way to handle this to get it fully working on any distribution besides Ubuntu.
https://github.com/chenxiaolong/Unity-for-Arch
Note the insane amount of packages, most of which are patched versions of packages.