They need Vents in the back and under arm. I don't like to ride with the front zipper fully unzipped.
Pass pocket on forarm near elbow. MP3 pocket with clear cover near the left shoulder with hole for headphones on the inside with some elastic loops to route the wires to the back center of neck.
Vertical Pocket zippers should all go down to be closed.
Asymetric front zipper cover, I ride goofy and my zipper cover gets filled with snow on powder days. Needs to go from left to right for goofy and right to left for regular stance.
One inside pocket for phone that is placed low ,above the hip and to the front.