Look at light insulated tops like the Patagonia Nano Puff and the MontBell Thermawrap. You get the wind-cutting power of the shell and a layer of insulation comparable to the fleece. You can sleep in them to extend the range of your sleeping bag, and they are far easier to pack-- the compress to nothing.
If you want something a little warmer, the Mountain Hardwear Compressor jackets are about 16oz (in XL).
The Marmot DriClime is a great jacket, but I haven't found a way to blend it into a really UL clothing set. The Patagonia Alpine Windshirt is similar-- a super light shell with a wicking lining and about 11oz. The Patagonia model has a drawstring at the hem and zippered hand pockets for the same weight as the Marmot. These jackets work perfectly as a windshirt and give you the equivalent insulation of a wicking base layer-- thin stuff. You're stuck with the extra weight of the lining, where a classic windshirt is just a bare shell and you can dial in the insulation layer you want. Like softshells, I think they are great for day hikes or short trips. If you are planning a longer trip through varying climate zones or seasons, there may be more versatile combinations. That said, I wear one around town all the time.
I would couple a plain windshirt with something like Power Stretch or Patagonia R1 fleece to get an insulated/windproof combo approaching your fleece example. I've contemplated that combination with an insulated vest for a light, warm, and versatile insulation set.