Come on! Intensity! I don't know if that's what the younger generation is taught these days, but you stop moving after you hit a ball. Eyes open, scanning your opponent for the shot he's going to hit, and be on your toes to hit it. You get jammed many times because while you do split step, you split step onto flat feet. Get those feet set, shoulder turn, stroke, recover, split step, shoulder turn, stroke, recover, etc.
That's all I end up saying on most of these videos these days. I'm a huge believer that simply moving better improves every aspect. It lets you max out your strokes by letting you hit them how you want every single time. Once you can do that, THEN start changing their mechanics.