Just downloaded all three books - and your links in your message are really good visible, too!
The only thing to clarify is now, how did Chopin played his rubato ...
Nicole wrote:I have my definite opinions on EXACTLY how Rubato should be done effectively, but will keep mum for a change
For me, there exist several kinds of rubato executions, and all have there eligibility.
However, at least I would be really interested to know these your definite opinions about the exactly and effectively rubato execution!