So about this time every year KC releases a new print or design change for Goodnites. If you worked in their R&D department what changes would you make? And don't say make them bigger because we all know that's not going to happen!
I would continue to make the cool designs/graphics that appeal to older kids but maybe make them more age related. I would also add graphics from cartoons or movies to make them more appealing. I would add a wetness indicator too. Also I would create a rewards system like Pampers or Pepsi where kids can collect points and redeem them for toys. This will help make the kid want to wear them. Lastly I would make them more absorbent for heavier wetters.
Remember you work in R&D.