But for me it would be a replacement for my primary PC and my tablet, replacing my ThinkPad X-series subnotebook and my firesaled HP TouchPad. (That is, it would replace everything except my media PC, which is attached to my television.) I wouldn't need much power nor built-in storage, but an 11.5" IPS screen would be nice.
And for pocketable stuff, heck, in the right circumstances, like for foreign travel, I'll still carry my N800 and bluetooth GPS transmitter!