I ride with a helmet light and need access to a secure back pocket for the battery.
I like Illuminite and like HiVis color for daytime use.
Big zipper pulls that you can work with gloves on.
Pit zips
A front pocket for my work badge to display at the factory main gate. Separate from hand-warmer pockets.
Some clever way to fold up the jacket and carry it when temps get too warm mid-ride or for the ride home.
Something that is very breathable yet rain proof, won't make noise or flap in the wind