I've yo-yo'd back and forth over this kata and its usefulness for some time. I'm still in two minds, but the reason for this thread is one technique in particular. The third movement where the right fist, from a mid reinforced block position, sweeps down to meet the left elbow then sweeps back up into a deflection/strike.
See at about 19 seconds
8 seconds here
3 seconds on this clip
The general application of this movement is just as a block/deflection. If this is so then I would ask what lesson the kata is trying to impart with this particular movement/sequence. Otherwise if there are any other ideas about application I'd love to hear them.