if I were free to contradict Countdown's portrayal of the event.
Are you implying that novel writers are currently not allowed to contradict the events of Countdown?
I thought that ship had already sailed. I thought the novelverse already contradicts Countdown. Most significantly in that Data in the novel universe has not been resurrected in B-4's body as Countdown established, but is in a different body that looks different than the one established in Countdown.