I was much more impressed with the second (drills) DVD. This DVD does a nice job breaking down the basics of the 4-D and provides drills for working on 4-D skills. From basic drills on change of direction to playing the 3-step game and fade routes, the DVD goes through the 4-D progression in good detail.
One thing that we may take from this presentation is utilizing the drift step for changing direction. I'll be watching over and over again until I get this down. I can certainly see the technique actually being superior to shuffle in terms of biomechanic efficiency and certainly more fluid than T-stepping. The only concern would be the expense it would take to get good at it (compared with shuffle). You could be good at the shuffle in 5 minutes (then spend significant time concentrating on not being sloppy) - it would take significantly longer to make 4D (or just the crossover steps) a natural act for average athletes.
The 2nd disc was really nicely done and is high quality (except for some unexpected video breaks? in the bp portion). I would have preferred more specifics on foot placement and body positioning (coaching points to make sure kids avoid common errors). Also, it may help to show how this technique would apply to various coverages. This would be perfect for guys who run their defense like "you cover that guy" and mash various concepts together. This would be something to get started on in spring ball and really just hammer every day, giving something for the kids to use heading into summer passing leagues. Because the transitions taught are directly related to what coverage (leverage) you are playing, it would be nice to articulate in subsequent offerings / clinics how this would adjust and adapt.
I applaud coach rodriguez for presenting these materials and helping the game with an improved technique. The video quality IS top notch, I just wish there was more that we could apply towards coaching the specifics of the technique.