Like, really?
Am I missing something?
It's $1,299 for a very small laptop with a permanent keyboard attached that isn't very powerful at all and requires adapters out the @$$
Power users? No, because they already have a rMBP, and it's not even a powerful laptop.
Casual users? No, because it's priced out of their reach or they likely already have an Air and can live without the screen.
Apple addicts? This is the only category I can see actually buy one, but I can't see them recouping their R&D with sales to this demographic at all.
The reason you buy the MacBook instead of the MacBook Pro is if you value less weight, less size and excellent screen-to-size ratio compared to performance.
I have a 11" MacBook Air and a 13" MacBook Pro Retina and this new MacBook will definitely replace the MBA as a travel computer and when I want to travel light as possible.
It might even replace my rMBP since almost nothing I do while away from home is CPU and GPU intensive. If I do need to heavy workloads I will do those on the iMac or just be patient and let the MacBook work on it for a few hours.
And if Apple had doubled the battery life I would have easily paid $2000, maybe even $3000.