re: the TMP proluge - I'm not entirely sure but I think it's ONLY in the Director's cut - in short you haven't missed much, really. It's a very slowly zooming starfield - moving away, and some slowly paced music playing.

after that we fade to the Paramount logo and the main titles.

Since FanFiltration was considering adding a new text based prologue anyway, it was suggested that a new sequence be assembled from TOS footage to Imply the ship and crew returning home after the '5 year mission'

Ziz, The major strength of playing a Prologue [at least in this instance] is that we can bring people up to speed, then go off and show the main titles and imply a passage of time. Thus when we get back to our main characters any difference of appearance [greying hair, etc] is no big deal.

There is also a lot of TMP era stuff to cram into the start of the movie, so mixing in TOS era stuff might get confusing.

It's my understanding that FanFiltration wants to intercut the main titles with the refitting of the enterprise, I think in part so we can get rolling once the story starts proper without stumbling quite so much.

and Re: the Shatner clip there, I agree the original sounds 'good enough' as it is. It serves a purpose without giving anything away, at least from what i've heard.