MM/Wireless keyboard combo is once again a subjective thing, similar to the screen size of the Macbook. Some people are going to love it and think that it's "perfect", others are going to find some show-stopping fault with either.
I'm in the "love it" camp regarding both Macbook screen size and the MM/Wireless keyboard combo. I love the mouse ball (nipple) for both its feel and the scroll-ability it provides. Yes, sometimes something (usually a cat hair) gets in and gunks it up such that it doesn't scroll occasionally. An optical wipe and a shot of canned compressed air will get it going again. The keyboard has a good feel, is slim, and all the correct keys work the way they're supposed to. The battery life for both is more than adequate, especially if one uses rechargable NiMH batteries (keyboard 4 AAs, mouse 2 AAs.)
Sure, there are cheaper and possibly even better bluetooth wireless keyboard/mouse combos, but I didn't get them, don't mind what I paid for what I got, and the Apple MM/Keyboard matches my Macbook.
Shallow? Eh, I gotta stare at this thing for hours each day, so every little bit of asthetic and function counts. The MM/Keyboard combo serves both.