So in just a few range sessions* of actually working on the basics with a timer, drawing to an eight-inch plate from 15 yards, I've managed to shave a reliable half- to three-quarters of a second from my times, mostly by doing things I'd been told to do in classes, but had no way of measuring the effects of in practice without a timer of my own.
For instance, being rather short-waisted and having long arms, plus carrying the pistol behind the point of my hip, my natural inclination on drawing the pistol includes a panoply of tics and spasms like rolling the shoulder while thrusting the hip out and dropping it some, trying to ease access to the gun. The problem is that this rarely winds up with the hand and holster being in exactly the same place every time, resulting in having to try and "find the gun". The timer doesn't lie: If I just keep my shoulder and hips where they are and grab the gun, it's faster.
The other thing I need to work on is something ToddG pointed out to me: I tend to move really deliberately reaching for the gun and presenting it to the target, and then try and make up time by shooting fast. In essence, I'm doing it backwards: Going slowly during the parts where I could be going fast, and then rushing the parts where I could use the extra time.
Gonna work on that today.
*Incidentally, this is one of those reasons that it pays to be really careful, as well as having a blowout kit: Practicing fifty reps of drawing and shooting at a target equals holstering a hot handgun fifty times, with the concomitant fifty opportunities to screw up.