What I want to see is more intelligent use of the "swipe to unlock" process. Unlocking the phone is an extra step on top of anything that a user would want to do.
My idea: Apple could have a feature where drawing a certain (customisable) gesture would quick-launch a particular application/function. What if, for anything you had on your home screen (or any function within any app) you could set a gesture to launch it from the unlock screen? Say I had macrumors bookmarked in Safari - I could draw "MR" on my locked phone and have Safari launch it in one go.
Simpler gestures could be drawing a "C" to go straight to your contacts, "M" to go to your music, or (more cliche) draw a heart shape to automatically call your partner.
You with me?

It would be so much faster and not require you to look (even if you had to have an "enter" key at the lower right corner). Applications from the app store could even have their own default gestures which you could change if you wanted. And since you can use as many fingers as you want there would be no limit to the number of gestures possible.
Thoughts?