Picking up the logic from the Google Warehouse, here we have Unity3D givign us the Asset Store. For quick design visualisation, this sort of thing is key, being able to rapidly flesh out ideas with greater levels of immersion is something we all want.
What this needs then is the community to grow beneath the idea, an empty store isnt much use to anyone of course. I doubt we will get such things for CryEngine3 though – how nice would that be.

Unity Asset Store from Unity3D on Vimeo.