Do you think a tablet could replace the laptop? If it allowed a external keyboard and a stand I could see it happen...
I've got Ubuntu on my Samsung Q1 Ultra. With that, I decided I didn't need a laptop anymore (has USB ports for keyboard/mouse/etc. and VGA out, but I couldn't ever get the VGA out to work with ubuntu and a 1280x1024 monitor; it also had screen rotation issues; so it is now relegated to being my couch computer).
The main things I want to be different about it:
1) Ubuntu is probably the best Linux out there, and it's leaps better than Windows ... but the fine detail integration still isn't as good as Mac OS X. And, it proved to me that I'm just not interested in always hacking my productivity devices; the devices I depend on have to have vendor supported OSes (and thus vendor supported Ubuntu, Android, or Mac OS X).
2) The screen is just a little too small ... my 9" dell mini 9 (which replaced the samsung as the "mobile computer") is almost right, so 9" or 10" seems perfect.
3) The screen rotation issue. There are TONS of times I want to use it in portrait mode, and just can't.
4) DVI-I or DisplayPort output, with support for 1024x768, 1280x1024, and WD displays. I'll accept VGA or HDMI, but I STRONGLY prefer DVI-I or DisplayPort (because they're each capable of being converted to both analog and digital display types, where VGA and HDMI are limited in their supported display types).
The lesson of the Dell mini 9, for me, is: I almost never use the keyboard because it's too big to thumb type, and too small to touch type. So it's basically just always in the way. What I want is not a netbook, it's a tablet or a convertible-tablet ... with a 10" screen, vendor supported Mac OS X, Android, or Ubuntu, usable USB and display ports, and functional automatic (or at least easy) screen rotation.
But, yes, a tablet can replace a laptop.