1. What do you think a second screen the same size as the first one will do to the battery life?
2. If the physical keyboard was replaced with a touch one, why not just use a tablet? The physical keyboard is one of the main advantages laptops still retain over tablets.
Every time I think about the dual screen MBP, I try to come up with applications for such a setup and reasons why this is great. Unfortunately I'm never very successful with that.
1. Yeah, it might hurt the battery. Good point
2. A real operating system and a powerful CPU are the main advantages in my opinion. An iPad with external keyboard is still a tablet, not a laptop.
Here are a few scenarios I managed to come up with:
- programming: IDE on the top screen, ebook (Cocoa for dummies) or API as background for the keyboard screen.
- video controls on the keyboard screen during fullscreen playback
- dashboard as background for the keyboard screen
- handwriting, drawing, 10 finger touch input without the stretching your arms to touch the screen problem
Not so great, I know. The biggest problem is that it still wouldn't have the compactness of a tablet - you still have to open it to play a video.
How about a top case made of two layers of gorilla glass, with the screen in between (self glowing AMOLED stuff or so)? Laptop closed = tablet, laptop open = laptop.