You just opened yourself up to a whole bunch of ideas... All of them VERY different
There are companies that make women's gear, but they all seem to make sililar stuff IMO.
Here's my take on what's missing from the market for extreme women riders:
A good waterproof shell with no liner.
Lots of pockets.
Womens' specific fit.
Bibs should have a proper drop seat, if you make bibs.
Reinforced knees (not padding, just heavier material... I wear out knees).
Here's a few things that I have liked in past products:
Powder skirt.
Removable hood.
Softer material on the collars, and anywhere else that comes in contact with skin.
Those little snow cuffs on the sleeves.
Big pulls on zippers.
Snow cuffs on pants, or some way to attach them to boots.
Cargo pockets on pants... It's about the only place that I don't bump when I ride and I like to carry my radio on me.
I'm sure there's lots more, but that's a start
Kudos on you for taking the risk. The women's market will be a tough one... It's very small, and women are fussy... I only say that from personal experince
Good luck!!!