I have to say that I did generally like the dialogue. Although there were a few scenes that felt off, such as the part during the mission briefing where the vulcan gets confused by an idiom.
I can see your point however I generally liked the humor of the situations and it seems to be fairly popular amoung most of the folks I've received feedback from. For me I like a little humor to break up the tension from time to time. It reminds me of the TOS and TNG shows. At least that is my goal.
Thanks for the feedback. It is always appreciated.