We went off on a tangent over here; http://forum.trek-rpg.net/showthread.php?t=15438
So lets set up a thread for discussion of the temporal prime directive, and its effects. Cor. Two whole active threads at the same time in here!
OK.
So in the discussion we have concluded that by the end of Voyager the Temporal Prime Directive was well and truely broken. But what to do about it, would the DTI/Federation knowlingly sit of the new-tech and take the doc offline because of the advanced tech, despite the fact that as an audience we know that S31 would have their grubby mits all over it and of course the Borg would already be atuning their next assault to account for it...
But what exactly is a breach of the TPD? Is any time travel a breach? Or just the ones where an alteration was made that changed history. What happens when another alteration is made to try and set things right?
We saw in the shows that most of the crews played relatively fast and loose with temporal physics, often on little more than a hunch/gut feeling, in some cases they altered entire timelines, now we (the viewer) knew that these actions often set things right for the primary universe... but it still required the essential deletion of a timeline?
Now we have Spock prime hanging out in his broken past with himself, and in so doing is breaking the temporal prime directive every single day. But what would happen if this somehow managed to correct back into the primary universe, again another thread of time is cut but the TPD would have been broken...
the floor is open for debate!