This is obviously made for the casual user market. Most of the time, what these light users need is a keyboard, and...that's it. Uploading images/songs/ apps/files from your iPad/iPhone to the laptop can be done through iCloud, or Bluetooth. This is
a completely minimalist solution relying on cloud storage & wireless functionality. I like Apple's specialization here. Very cool product line if the rumor is true.
Don't worry, MBP Retina line will still be around for those who like more options, connections and ....holes.
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If I have my way, I would go even further and have a wireless battery charging system and this laptop will have only one port: the headphones jack.
Imagine the marketing campaign: "A brand new 12" laptop from Apple, with no string attached."