The show does exactly what it set out to do -- recreate the look and feel of the original Star Trek. There are obviously those who will be unable to get past the different actors in the same roles (even more so than with the JJ Abrams films, because the films move in a completely different direction. And therein lies the strength and weakness of this production: the fans.
For this fan, the show was a joy to watch. I don't want to see a parody of James Shatner and the original crew, but rather another take on the same characters. Some are more successful than others, but overall (and especially for a first episode) they did a great job. Heck, go back to the early Next Generation episodes and see how cardboard-thin some of the characters were and how stiff some of the acting ones. OK, so Riker was stiff throughout the season
but I digress.
The more versions of Start Trek there are, the more splintered the fan base will be. Some purists loathe the new films with their blockbuster dependence on CGI, quick cuts and explosions. Some who were raised on Next Generation think everything else inferior. Personally I couldn't stand Voyager. So, watch the episode and decide for yourself.
