Interesting, I can see what you're saying. Perhaps the next movie will have a less serious Spock; it would make sense for him to start out uptight and serious like in the movies and then be the more laid-back serious you mentioned, as in the TV show, since the TV show still happens after the movie.

Speaking of old vs. new Spock:

Ahh I see what you're saying. Well the latest rumour is Joe Cornish, though I'm not familiar with his work. I don't have anyone in mind otherwise!