I just don't see the need to attempt to quantify time travel.
Star Trek fans ask questions about everything!
My first few weeks on the TrekBBS, many years ago now, I attempted to tell people about comics and novels that attempted to answer their questions about aspects of the various ST series and movies. People would scream at me, "But they're not canon!"
The tie-ins are a way for the ST writers to explore things only hinted at by the canonical adventures. Fans have had many questions and arguments about time travel over the decades. You actually want CBS, Pocket and IDW to say, "I'm terribly sorry, but we have decided never to quantify the secrets of time travel"