TOS-R was hit or miss. In cases where there wasn't an original ship shown on screen (the Gorn ship, the Antares, etc.) I think they did a good job with making new stuff. But when they replaced an old ship with a new one (the Tholian ship, the Aurora, the Woden, the 'small scout ship' from "Friday's Child" now a D7, etc.), I think they went overboard. I would have preferred they just made the ships look exactly like how they looked originally, just with better CGI models. Completely changing the designs just didn't feel like they were respecting what came before, warts and all.