I like where you went with them this time around as far as looks go. Being unable to pick the actual colors though, instead of preset color palettes, is a little lame, but bearable. But why did you get rid of so many of the older emblems to add new ones? Why not just add new ones on top of the old ones? I miss my Unggoy emblem(s). 
I miss my crossed energy swords emblem back from the days of Halo 3!