first this just what i think of every thing with challenge mode do i like the mode yes adds a ton on the replay ability but do i want to sit there for 10 plus hours trying to unlock skins that for the most part really don't change how they look not really no the one way i could see them fixing that is just making it a little easier but not to the extent of hard difficultly just a little easier on the storms and the money income also the skins isla matanceros both skins to die for isla penta rex skin also to die for and banana spino raptor skin great all the other ones not so much and i know you guys at frontier poord your heart and soul into those skins just the ones i listed where the ones that actually stood out to me that's all i have to say about this topic.