You know that there is another Cherry/Blackwell duo - El Corazon on ECM? I haven't heard it' but it is definitely on THE LIST.
Agree with every word you say regarding Blackwell - what a complete musician! I also always tend to focus on his playing - there is so much imagination and beauty in the way he plays. Even his last recordings (What It Is? and What It WIll Be Like?, both on Enja MW), when he aparently could hardly walk, have the same sense of joy and search that his earlier recordings do - and his partners on these two records (Mark Helias, Carlos Ward, Graham Haynes and Don Cherry on one track) are giving their all.
This reminded me that I have a CD of a 1958 performance recorded in New Orleans with Blackwell, Alvin Batiste, Ellis Marsalis and some other people. I remember enjoying it a lot - will give it a listen soon.