Do you think it is a good idea to allow every sparrow to be upgraded with coils ? Yes/No? Hi, Since the beginning we have 6 sparrows to chose from, and 4 coil colors, to make our own Legendary Sparrow. I have made 2 that I like, and now, I am stuck. It is a personal opinion, I find the Crucible and Vanguard sparrows skins boring, the color schemes offer little appeal to me. If only I could upgrade any sparrow with the coils, like my very first sparrow. Why are we not allowed to upgrade Basic and Uncommon sparrows ? Here is an obvious answer : Sparrow S-10V That Uncommon sparrow was offered in the preorder version of the game. retrotaku