I was looking at this on the Sephora site the other day and wondering the same thing. I decided that, for me, it was probably not a must-have. The first thing that struck me was how many of the eyeshadows are pastels -- and cool pastels, at that! So, I'm sure that's a plus for many people, just not for me.
The lip and face colors seem a little more interesting to me, but I think if one has a pretty full collection already, there's nothing really to go wild about.
But, again, this is just my take. I wouldn't want to dissuade you from a purchase that may turn out to be fantastic for you. I guess I'm not really helping at all.