Very interesting article that.
If there were the resources at my 6th Form, I would gladly do the course. The problem is, you've got the issue of having to possibly get new tutors in, or even do some training for current tutors. For example, the Design & Technology department tutors - the majority know how to use 3DS and the assorted products, along with Photoshop, and the likes, but wouldn't know how to get them into the correct format for gaming. The Art department could probably quite easily do something in regards to concept art teaching...
Overall, my point is that while it can be done, you need the training, and more importantly, funding to run these courses. If you don't, it'd be a shambles. Not to mention, theres a bit of an issue with it being a "Diploma", as a lot of uni's aren't accepting them as of yet, along with employers - they don't know their value, therefore class it as the same as an NVQ (Theres a reason why its referred to as a None Valid Qualification.)