Honestly TOS-R needed a knowledgeable VFX director on it—someone with a background in or understanding of how optical effects work on FILM—in order to make the effects fit seamlessly into the show. The big problem with the TOS-R effects, beyond the dumb boo boos (e.g. the orange "blue flame" and the Enterprise actually vanishing behind the limb of a planet...which would make said planet about 10 miles across) and crappy models (hel-lo low poly Klingon ship) is that the effects don't feel like they belong next to the footage that surrounds them in terms of LOD (level of detail), grain and lighting style.
Your size-of-planet comment reminds me of a shot in the opening credits of STAR TREK VOYAGER, which were done by Disney if I recall correctly. They show Voyager coasting over the rings of a gas giant, but the ship's reflection in the rings is so big, it would make the planet absurdly small.