Exploring Vulcans with Tuvok was definitely a consistently high point for the show and it takes a lot to look at the original show, make note of how Vulcans control or repress emotions, and then actually flesh out detail that fits with the previously told narratives, or at least not going over the top with it. Pairing Tuvok with lone-survivor-happy Neelix was also a stroke of genius; the restrained character adjacent to the hyper one and, if nothing else, the actors hired (Russ/Phillips) go so far above and beyond that anyone else wouldn't make the clunkier stuff work.