I indeed vectorialized it at the best quality possibile to avoid pixel problems (after all it is just numbers and a cross!). Since I saw Roberto Gotti's 1600 in person, I was completely blown out by the quality of printing it had, the detail... The Forgeng is quite a good reproduction but it is not the same at all, maybe it is just self-suggestion. Your scans are quite better to capture that level of detail!
Indeed I think the pictures are also full of content. Just look at what they do with the hands, how they switch the grip about. There's people around that say that the German school hasn't left about enough information about basic stuff to be fully reconstructed, but it's the little details like this that can bring it really to life again. Also, it's the basic exercises like the numerical square that really make you live the basic stuff. You can't really do it without starting to work out the stance, the footwork, the handwork, the correct trajectories. I have seen beginners or total swordmanship wrecks just "click" with it and get better by the minute. Of course, like in any other kind of martial or indeed athletic endeavour, when you reach the "doing it almost right" level it is a steep climb to "doing it well"
As of now, I'm still trying to figure out the correct way to do it with the short edge.