Remember that Mulgrew wasn't even their choice for the cameo role...it was Jeri Ryan. I don't remember why Ryan turned it down.
I've heard this story many times. Is it really true? I mean, So9 would have made even less sense than Janeway. They would have had to significantly change the cameo from a Starfleet admiral to something else.
I just cant see where Seven fits into that script at all. Cameo or otherwise.
