Quick update from day 1:
The level 3 course had a massive number of participants. We were broken up into smaller groups - we have seven participants plus the instructor. Sammy, our course conductor, did a quick boot check within the first five minutes, and noticed that my cuff, despite its buckles being done up as tightly as possible, could fit an extra couple of fingers! I had no idea your cuff should be fully snug. So at lunch he made a point of lending me his spoilers and stuffing some trail maps down the back. Skiing after was like night and day! Suddenly I could pressure the cuff--where before I got much less pressure even with a massive flex. At the end of the day he took his spoilers back--yikes, skiing felt sloppy again. Needless to say I went out and bought some spoilers after our session!
Sammy also worked on my stance issue. It turned out that my feet were so close that tipping to quite high edge angles became difficult. While too wide of a stance hinders your ability to pivot, I wasn't near that point. So for the afternoon, wider stance was on the menu for me. Third party observers said the stance change made my skiing look better. I felt like I was skiing on the inside ski quite a bit thereafter. That happens though when you change one attribute in someone's skiing--other problem elements suddenly become more visible. One thing at a time! Also, I have to recover my active ankle movement, which has kind of fallen apart now that I'm more forward in the boot. (lots of what you mentioned, mogulmuncher. are you a course conductor, by any chance?)
In the morning we focused on the skill of pivoting and we did some video of our "advanced parallel" and short radius turns. In the afternoon we worked on edge engagement and pressure management. I think it made a big difference to some of us in our ability to maintain speed and turn shape.
The off-hill session was a good re-introduction to the CSIA teaching methodology. Not much to say about it yet. We watched a video that demonstrated each element of the methodology in a skier as they skied (physics, biomechanics, can't recall if it went any further).
Basically, the level 3 has been an awesome course so far. The next few days won't specifically be ski improvement; rather, they're focused on enabling us to teach more advanced skills (short radius, bumps, off piste). However, I suspect we still will get lots of ski improvement anyway in those domains.