I don't desire a lot more in the way of shelters than what's currently on the market, but I think there is something to be desired in insulating garments made out of the lightest materials and multi-use sleeping bags.
I'd like to see a graduated loft (cut the loft in half in the sleeves) synthetic or down jacket with a detachable hood and a true dropped tail (I hate my ass being chilled when I'm sitting down). Also, I'd like to see a lightweight synthetic vest with a detachable hood.
I have another idea that I've been knocking around, which may or may not be practical, but what if there were a full sleeping bag, rated to 20 or 30 degrees, that had sleeves, and you could zip off the bottom half, below the waist and use the top, with the hood and sleeves, as a jacket. There are plenty of ideas like this on the market, but nothing quite like it...with quilt users who have modified their quilts to be used as insulating ponchos, and the Feathered Friends Rock Wren and the Exped Wallcreeper sleeping bags, but I'm thinking of something that you could just zip off all the bottom material and it would be essentially a parka as opposed to pulling out a full Rock Wren sleeping bag to try to use for breaks while hiking. Also, the upper part of the sleeping bag I'm imagining could be cut generously, so it would be roomy enough to sleep in (if one were to pull their arms into the sleeping bag body), but it could have internal shock cord or elastic so it would hug the torso and not be drafty when used as a jacket.