I think I must be having an off day or something because I just can't seem to take that seriously, I only really watched about 3 minutes of it but the acting seems to be really quite 'hammy' and just kept expecting a punch line or two, it's just like watching a comedy spoof lol.
The original series acting was quite hammy as well. The original series is available on Netflix these days, so I've recently been watching many episodes, some for the first time since my pre-teen years. I was a big fan during the early 1970s when the show was in syndication every day after school, around my fourth or fifth grade year. I hadn't watched much since then.
The things I notice now, which I didn't notice back then, are the overacting, and especially the overdramatic cinematography, lighting, and posing. For example, the way the lead characters so often pose in formation around the captain's chair for the closing scene, not facing each other. Or the heavy use of soft focus effects on women (see especially Joan Collins in "City on the Edge of Forever").
I really like the way the new series has the sound effects and set design just like the old one. The acting is roughly similar, as well. The lighting and cinematography isn't quite what the old one was, though.
But for me, the appeal of the original series is in the memories it brings back, and the ability to see the old episodes once again, seeing what I remember and what I had forgotten over time. No continuation series, no matter how good, will have that same draw for me.