DC editorial can't force Morrison to do anything. His run on Batman is pretty emblematic of that.
Captain Craig wrote:
Swamp Thing #2 - Ok, so let me get this straight and see if I understood what I just read, Swamp Thing is now a mantle? A host to become Swamp Thing not too unlike passing down a GL ring? The Swamp Thing identified himself as a guy named Rodgers who was pilot in WWII and is trying to convince Holland to become A Swamp Thing? I didn't get the feeling based on what I read that he was going to go away if Holland became a Swamp Thing 'for real'. Also, am I to assume then that Holland has now NEVER been Swamp Thing?
Yes. It was established in the beginning of Alan Moore's run on the character that the original Swamp Thing was never Alec Holland, but a creature of the parliament of trees that had absorbed the memories of Alec Holland. What this issue did was a reversal, Alec Holland now gains the memories of the original Swamp Thing.