well, the commercial failure was limited to North America. Even Phil was losing ground there with Both Sides and after that.
CAS deserved a follow up, Ray had a contract for two albums. They obviously did everything to make this period disappear (see Sum of the parts), so it’s no wonder they didn’t want Ray in this recording. This was just after the CAS tour ...
Totally agree CAS should have had a follow up. Many follow ups! They were still in their 40s, there really was no impediment other than ego (and only Mike's ego at that).