When did Spock try to save Romulus? Because Voyager already returned from the Delta Quadrant with 'trans-phasic torpedo' technology as well as that special shielding that Spock prime would be aware of.
Taking technology from an alternative timeline that's two universes away and twice non-existent? That's double-cheating.
At that rate, the Star Trek that will be airing by 2265 will have Ancient Greeks fighting the Borg with trans-phasic torpedoes they got from a Roman starship captain who came back in time.
Maybe that will eventually explain the Romulans and the Remans.