[wilsonng]

Tablets, in general, are still several generations away from becoming as full featured as a desktop or notebook is now.

I'm sure we'd all love to replace our MacBook Airs with something as slim as an iPad. But current technology (i.e. more powerful chipsets, larger capacity SSDS, and a smaller battery with longer life) doesn't exist yet. If it does exist then it might not be at significant yields (i.e. difficult to manufacture with low defect rates) or just too expensive for the consumer market.

Apple would never have been able to make iPads and iPhones twenty years ago because the technology and manufacturing facilities just weren't available at that time. I could never have imagined something like the iPad and iPhone unless it was in a sci-fi TV show or movie.

We're all eagerly awaiting for the next generation of iOS devices that would do what you are asking for. We just have to wait for the technology...