Hell yeah,
Volker you got to speed things up. SteamOS just got out running on Debian Wheezy 7.1 and this would be a nice addition!
Alltough there are some facts at the moment which are rather bad of Valve like only UEFI support and at least 500gb/1tb space needed on the OS. And this in times were nearly every new PC runs a SSD as a system drive... Should only take some days were the installation tutorials for installing SteamOS via Package Repos are out!
http://store.steampowered.com/steamos/
Greetings
David