I think it would be cool if there was a slide show of background pictures for the login screen – similar to Windows.
We should probably reuse/modify https://launchpad.net/bugs/1789036 for this.
Another feature request would be to include the third party software for graphics and WiFi drivers and other media formats package in the Software Center – without having to install the old Ubuntu Restricted Extras – for those who forget to tick the box during the installation.
Try opening the Additional Drivers app for that.
Additional nice features would be to include complete icon color selections rather than just accents, as well as an included coverflow 3D Alt + Tab selection, as well as sole additional built in utilities like GUI firewall.