What gear or apparel would everyone like to see that does not yet exist? Maybe the gear makers will listen (ok, probably not)...
What I'd like is one of these companies to design, sew, or better yet, weld a truly UL waterproof jacket (Neoshell*, Gore Pro-shell, 3-layer, or even proprietary stuff) with an UL fleece liner ( something on the order of the Patagonia D-luxe fleece, the hoody weighing in at 9.7 oz but replace some thickness with zip/zip-in system). Yes, these "3-in-1" systems exist for skiers, but wish they'd bring it down to less than 10 oz for each piece for a combined weight of less than 20 oz for the lightweight traveler, hiker, and everyday user.
(*Add/Edit : though I just read Field Testing Waterproof Breathable ... Part 3 from BPL from early Oct, answering most of the above. Obviously missed that article)