I understand it not being your cup of tea. But you might want to taste the tea first before deciding that it's not yours.
I did watch the Center Seat vignette. I'm not sure if that was meant to be a selling piece or not, but I resisted my usual impulse to watch everything in order (meaning that I'd watch the prototypical pilot first). But it's really just the concept itself; having other actors playing the TOS characters. If I want to see TOS, I'll watch TOS (there are still some episodes I've only seen once or twice). Unless the new actors were just brilliant, you'd never really be able to capture the true flavor of the show to my tastes, because for me, it's all about the way that Shatner, Nimoy, et al bring the characters to life. I don't believe for a moment that Spock would've been so wildly popular if he'd been played by Larry Montaigne or even Martin Landau. So, to see these roles filled by people who not only aren't the ones who made the roles great, but are also amateurs (no offense again, but they aren't professionals, right?), it's just not the same.
So, I could never really watch the show as "further Star Trek adventures," but I do try to be open-minded (and fail sometimes, I'll admit), so I might just try to approach this more as just a loving homage.
I have already downloaded In Harm's Way, but I'm not even happy about the recasting for STXI, so there's nothing to fell bad about if I don't like your cast either.