I think it is obvious that the intention of Remora is to "mimic" other players, so he would get a card from the same deck just like from the same Warp.
So the answer I believe is yes.
I agree. We played it this way, and it didn't break anything. Remora is "along for the ride" with the other defensive allies, like a real remora is along for the ride with a shark. Remora gets the same benefits as the defensive ally, as it would the shark (free food).