Terrible font - Helvetica Neue roman needs to die in a fire when compared to Helvetica medium or Lucida Grande.
Font is too thin, spacing is too wide. Looks weak, girly, empty, frail. Ick.
Terrible color scheme - too luminous, too garish, colors conflict with each other and are hard on the eyes. Unpleasant to view.
Flat UI elements simply suck, look insubstantial and weak.
Translucency is better, but still sucks. Why do we need this?
Can't look at it. Don't want to look at a UI that hurts my eyes.
If the future of the Mac looks like this, I'm leaving the platform. Jony Ive should never be allowed to touch an interface - ever.