Something like that may have been necessary if Illyana was still dead and Amanda was still Magik, but the moment Illyana returned all of the retcons...
I assumed your theory was supposed to explain the whole 'there's nothing of Illyana in the soul sword and she never created it' retcon Marvel used to...
While it would be nice, expecting a truly faithful adaptation of anything is asking for too much except in very specific circumstances where all the...