Guys, get real. Steve didn't invent anything, Steve didn't design anything. They have designers and research department. We did not lose anything.
Actually, I've found several articles interviewing former Apple employees -- if not written by them -- which describ how if he didn't have direct control over the design process, his engineers had to figure out how to meet the demands placed on them by his designs.
IMNSHO, his real genius was in recognizing what was marketable and useful and what was not. For instance, he snatched up a guy who wrote a graduate thesis which became the NeXT kernal, which became OSX. And while we had sporadic and disparate places to get J2ME, Symbian, or Palm (amongst others) applications and games, there simply was nothing fully integrated and easy to use like the iTunes store. He took devices which were decidedly complex or seemingly daunting and put them into the hands of average users, if not directly by his own designs then most certainly by his demand.
Irrespective of my disdain for Apple products in general, or my lack of compulsion to use OSX, Jobs was absolutely a great mind and brought a lot of great things to everyday people, and he deserves at least that credit.