I'm of two minds about the HD and BluRay TOS transfers. Yes, sometimes the extra clarity shows things that were never intended to be seen. But I enjoy Trek in two distinctly different ways. I love it as an charming, adventurous space opera; but I also love it as a TV show.
I recall getting my DVD set and, given the extra clarity even that medium gives over VHS, noticing for the first time the wood grain in certain panelling, the parting lines on Nimoy's ear extensions, and the way the frosted rear projection material in the overhead bridge monitors rustles when George Takei jumps off the turbolift with his foil.
Yes, these things can break the illusion of the drama; but they also transport me right back onto the film set on a certain day in Los Angeles in 1967.
And for me, that's gold....
M.