Exactly like that! But with the toolbar at the top and less of the kitschy storefront skeumorphism. But interface wise, it's still nicer than anything I foresee coming from Valve in the next decade or so.

Bodega really nailed the updates system. It found all of my non-app-store software that was out of date, and handled the updating with one click and a password. It's having trouble with Calibre, but Adium, Transmission, Pixen, BetterTouchTool, and others all worked fine.

Thanks for pointing this out! The only areas I see Steam having an advantage are preexisting users, and the ability to sell cross platform (Mac+Windows+Linux) software.