Cool.  I definitely understand that it can get confusing.  The beauty of the H9's midi mapping capabilities in my eyes is that I can set the Midi channel the H9 receives on and then set the midi channel that it transmits on to the m5.  (The m5 can be set to receive specific midi channels)  Thus eliminating any cross-talk/confusion in the midi pipeline.  

I can achieve this by buying another piece of midi gear for another $150 and putting in line between the two pedals which will let me basically map the m5, to any h9 preset. (but not limit me to only 25 presets via the m5) I was just hoping the H9 could do it, and it can, just not with the program change activating the preset.  

I appreciate your input and timely response.  If something like this is indeed decided upon in the future, please let me know.  I would love to help beta test too if needed.