I rarely use the keyboard on my laptop. The laptop is part of a larger setup that involves a larger external monitor (with the laptop screen being the secondary display) and a wireless keyboard and mouse. I would love it if the laptop was just a tablet "docked" to connect to the monitor and keyboard/mouse. Then I could easily undock the tablet and use it as a tablet when I wanted to. But then plug it back in for a more "traditional PC" feel. Obviously it needs to be powerful enough for me to get my work done... and it would need to run the apps I need to get my work done.
Interestingly enough, you've pretty much described Microsoft's Surface / Surface Pro. I think, debacle about the x86 vs ARM (Win RT) confusion aside, they're onto something with the form factor and expandability.
My current personal use laptop is less than a year old. I'm hoping by the time I need to replace it things will have settled down a bit with the Surface... or some other device that fits the description comes along.
