Having read the script Ellison wrote, I can see why Roddenberry was certain the network would have demanded that Beckwith be played by James Doohan *(this being why he always took the next step and said Ellison had Scotty dealing drugs).
That said, I've looked over the first issue online, and will not be reading/collecting this adaptation. Firstly because to me, it isn't a Star Trek story. It's fine science fiction, and amazingly well written, but so much of it is the antithesis if what Star Trek is meant to represent, and since they're presenting it with all the Trek trappings intact, including cast likenesses, I don't find it appealing. And then there's the fat slob they have as Beckwith. He's nothing like the description in the script. I half expected the guy to be wearing pimp shades and a feather boa while filing the engineering paperwork in his quarters. He's supposed to be hiding in plain sight, dressed properly and following the letter of orders, while being a cunning rat bastard alone in his quarters. Once again, I don't find it appealing.
*With the requisite name-change to Scotty, of course.