What I don't understand is, if time constraints were such an issue, why not reuse all the applicable work that CBS-D did? Isn't that how it was done originally? Did they really redo every effects pass on stock footage each episode? Blur it up, add Curry's touch to it, whatever. It would have saved weeks of work simply porting over all the ILM work which was the majority of shots of the Enterprise, leaving time for much-needed QC. They practically started from scratch on everything. So instead of using superior effects, they waste weeks on inferior effects. It doesn't add up.
I'm relieved to learn (from TrekCore) that the opening credits were ported straight from season 1. Based on what I've seen, I would expected HTV to redo those too, but gladly that is not the case.