i thought commanders kept magic even if they morphed? o well. and if possible you might like to try swapping to normal horrors soon (research allowing). after reading most of your report i started my own abysia game and am currently owning with sending horrors and lots of assasins (but on a smaller map, urgaia to be exact) and with 2 6000 pop provinces with 3 hunters each i can easily meet my slave demand, its around turn 70 and ive just got pyre up and im cranking out spells and items now
i also found a site right next to my base to let me get shadow seers (S3) and grey knights (etheral 30 move knights) and have been making etheral crossbows for assasins (which i believe warlocks may also make)