I hesitantly voted “yes”, but only if the cis woman was willing and capable of coping with, what would be most likely, a trans-woman life. It seems very morally dubious outside of having mutually strong reasons for the swap, though. Otherwise, if it were a lop-sided desire, I would vote “no” because I would feel I cheated someone out of their womanhood.
If it were possible with a cis woman, then why couldn’t it happen with a yet-to-transition trans-man? That would be most ideal and mutually beneficial, rather than one-sided. I would take that in a heartbeat.
While we’re on that, someone want to take a beard for a smooth face? My facial hair can grow fast in a week and would make some trans-man very happy, I think. 😉