Paper Moon wrote:
My memory of "Bloodlines" is a little rusty, but from what I can recall and gather from MA, the subspace transporter would solve the distance problem posed by STID but not the relative motion problem posed by ST09 (and described in BoBW). So that leads me to think that the "transwarp equation" might have incorporated aspects of the subspace transporter, but be fundamentally based on a post-2379 discovery.
Maybe. What a lot of people overlook is that the '09 movie used "transwarp" differently than it had been used before -- instead of using "trans-" in the sense of "beyond," as in a velocity faster than warp drive, it was using it in the sense of "across," as in across the warp barrier -- beaming from a (relatively) stationary location to a ship in warp drive. However, Into Darkness
apparently forgot this, since it showed "transwarp" beaming being used to get from Earth to Kronos.
I agree that transwarp beaming does seem to be dangerous and somewhat impractical from how it's been used thus far, but I'm not sure it is so to the degree that you're implying. In STID, no one seems to react to Harrison's use of the transwarp transporter as if it were incredibly dangerous to do so. No one says anything like, "Wow, he must be nuts." So I'm not sure it was the writers' intention for the technology's use in these circumstances to be quite so extraordinary.
Given how many different writers with different assumptions have written Trek over the decades, you can't possibly reconcile all the inconsistencies unless you're willing to interpret things differently from how the writers intended, or to squint a little at some of the script details. Heck, there are countless detail-level contradictions throughout the canon, so the only way to be able to buy into the pretense that it's a single coherent universe is if you're willing to be flexible about details and gloss over the occasional inconsistency.
Besides, it's simple enough to rationalize just by the fact that they had more important things preoccupying them at that moment, like the murder of several members of the admiralty. And given that Harrison had just committed a couple of extremely violent acts, it kind of went without saying that he was fanatical, determined, and possibly insane. Heck, he was taking a huge risk by attacking a Starfleet facility so brazenly in the first place. So the fact that he'd take the added risk of using an experimental transporter wouldn't really have warranted surprise at that point.