I do love these lines.
Threats 2 pg 54, bottom of left column, final paragraph, sentence that brought this up.. -"The Master Shedim inherits all of the persons skills, Edges and Flaws, personality quirks, likes and dislikes."
"Master Shedim possession does not work exactly the same as normal possession, they have a unique more powerful version"
But, per the rules as I see them in the book...pretty much "no". .
But this so fits my need for an big and nasty evil. And its a new evil, which means I can have only a small, isolated group discover the special process to accomplish it. So the heroes will have to stop it quick, without altering most corporation, least some one get the idea of figuring out how to make money off of it.
And some one's idea of insect spirits "inhabiting" technomancers is also a truly wicked idea. While the street sams and mages are dealing with swarms of insect spirits in the flesh, the hacker/technomancers is dealing with swarms of insect
sprites in the matrix.
Consider yer lady friend's idea stolen and used to abuse my players. It maybe a one time only thing, never going to be repeated, but at least for one small group of runners, it will be their personal nightmare.