Comment 36 for bug 1245188

@Sebastien,
please do not make new unity-control-center less functional than last usable gnome-control-center (I mean full-functional version 3.4.2 in Ubuntu 12.04).

And as I wrote before in bug 1270574 - please realize the following - "keyboard layout settings must be consistent between gnome-control-center keyboard, indicator-keyboard and gnome-tweak-tool and /etc/default/keyboard".
As I remember pre-installatio of gnome-tweak-tool by default (see bug 1270572) is not possible because of dependence on gnome-shell. For now I unable to configure almost all settings on GNOME FlashBack session in Ubuntu 14.04 with unity-control-center (see for example bug 1282637).

I still hope that unity-control-center will provide users with universal interface for system configuration (and session-independent).
I'm ready to help you and other developers to test the newest features of the software.