This begs a question: How far and how quickly do you actually want to propagate these skills? Should they be accessible to everyone in aikido? How about outside of aikido? How about tennis players, bowlers, javelin throwers, etc.?
My position on this is that the ability to use these skills, at least at a rudimentary level, should be part of ALL Aikido training, right from the start.
As for outside of Aikido, I suspect that these types of skills might be of value just about anywhere but coaches will tune in if it looks like it will provide a performance edge for their athletes. Someone simply has to expose them to the skills and the training methods.