I grew up watching Star Trek, and love it, but going back now they are comically camp and heavy handed and slooooow. I think JJ did a great job re-booting the franchise and bringing humor and pace to beloved characters (and the casting is spot on).
I liked the original series, Enterprise and TNG was my most favourite. Deep Space Nine and Voyager were weak IMHO.
JJ's first movie was great, Into Darkness was a bit weaker (lacked story and intrigue, but was fun visually). I'm going with the majority on this new trailer - too Fast and Furious for my tastes, but I guess they are targeting a younger audience than us older fans.
I can't get into Chris Pine. IMHO Too cocky, lacks "command presence" and outward confidence and doesn't seem to have a plan (as in not too bright) and a bit too emotional. Maybe Kirk could/did evolve from a total goof into our beloved Captain .... but I don't think so.
Zachary Quinto is amazing as Spock. He should deliver his lines a little slower and a little less sarcastically.
John Cho as Sulu is great.
Simon Pegg as Scotty. NO WAY IN HELL! I'm a huge Scotty fan and Simon just does not do it for me. Real Engineers are thoughtful, intelligent, wise, quiet, commanding, adaptive, crafty, ingenous, have massive sex-appeal and are always right. Pegg's character has none of these qualities.