Thank you PP ! before I read this Thread I didn't think of the possibility that "Mark" was written as a Play , purely for entertainment perhaps, or maybe with a didactic motive as well.
What you suggest as to several Copies makes sense, it was already noted that, if memory serves, "Luke" and "Matthew", though reproducing the bulk of "Mark" , they differ on the wording in places, most likely meaning different copies in front of them as they wrote their Fiction. This make more sense if it were a Play, the Scribes making copies would not be as careful perhaps with a Play as they would with a supposed devotional Work.
The writers of Matthew and Luke did not think it was a Play though ?? but maybe thought that the content was factual, even if dramatized ?