That Oreo package is a travesty. Gross.
As for the original post, I’d combine rkutchinsky and PackageID’s comments. Avoid doing a simple re-fresh, but avoid going retro for the sake of going retro. RK’s comment about confusing the product in another language (or even english) is easy to do looking at that shelf photo you posted. Looks like you’re getting some pretty good dialogue going here. Since you aren’t really doing this project, you might as well take a few risks. As long as they are calculated risks, and you can back up why you did it what have you got to lose? Take a risk, and it fails… so what. Take a risk and it pays off, you might find better employment out of it in the long run.