Well, as youngndum and Steady On have pointed out, the obvious thing you’re missing is a shell of some kind. I use a Sierra Design Microlight anorak and pants for this purpose, but others prefer a waterproof to a DWR shell (like Steady On does above). I use an umbrella, so I don’t need quite the same level of waterproofing.
There are two other recommends I’ll give as well though: add a pair of silk-weight bottoms and switch out the fleece for an insulated jacket. REI silk-weights will do fine if you’re a ground sleeper (if you’re a hanger you’ll need to make that mid-weights) as extra bag insulation, and they also provide back-up warmth for those really cold days. The insulated jacket should be something like the Flash or Thru-Hiker’s Kinsman Pullover, a very light DWR shell and liner with high performance synthetic insulation. It will be much more useful than the traditional fleece.
Hope this helps and Good Hiking!
Strategic