I haven't read through all of this thread, but it took me some time to get used to driving a DSG. Sometimes it does feel a little slow to do what you want it to do, but the reality is, it isn't.
For example, when driving the DSG when your mind says "go", you press the throttle, the box thinks, then changes down, then off you go. That whole process takes x amount of time. In the manual, your mind says "go", you dip the clutch, reach for a gear, come off the clutch, press the throttle, then off you go. From the thought leaving your brain, to the car shooting off, which is fastest? I'd say the DSG even if it doesn't feel it. Maybe because we feel detached from the experience.
I'm sure the same applies when reversing off your drive. You want it to move forward as soon as you have selected D and pressed the throttle. I don't supposed that it takes any longer than it takes you to clutch down, change from reverse to first (whilst still rolling backwards) then wait until you are going sufficiently slowly enough to release the clutch and move forwards.
For most of the time, I just leave it in D and let it do it's thing. The only time I use the paddles is to upshift when overtaking to save the thing reving more than is necessary when the throttle is pinned.