Raise to Wake is a cool feature, however I would prefer to have Double Tap to Wake instead.
An example: if I have my phone laying on the table I front of me, I have to either pickup the phone (Raise to Wake), press the home button, or press the power button. I would rather just tap the home screen twice to wake the screen. Much easier IMO instead of having to use one of the other 3 ways to wake the phone.
Another example is, while I was driving yesterday I had my phone sitting in the cup holder. Obviously I can't have my eyes on the phone all he time, so instead of having to use the 3 previously mentioned choices to wake the phone, a double tap on the screen would be he easiest way to check for notifications on the lock screen.
Again, this is just my opinion, but I feel DT2W would be a better feature than Raise to Wake.