Anchorhead said:

I'm no longer interested in this film. After seeing these extended trailers, for me it's too slick and too 2012 with regard to cinematography and pacing.

Trailers are edited separately and differently than films. Also, comparing Ridley Scott to Roland Emmerich is ridiculous.

As a prequel, it also has the same issue that bothered me with Phantom Menace. There is a huge technology step backwards for events taking place several decades later. That's a story killer for me. We're seeing Minority Report computers which, far into the future, will become the CRTs of the Nostromo. No thanks.

Bingo covered this.

Plus, I'm just not getting a good vibe from seeing so much about the derelict ship. For me, the Space Jockey will forever remain a mystery, just as he has been for the past 34 years.

This is how many pre/sequels work - Something that wasn't explored in the original is explored. The process of revealing that and whatever it leads to can be a great experience, independent of the wonder you may have felt previously. Plus, one of the two writers is Damon Lindelof, previously on LOST. He's very good at showing the partial answer to a mystery while raising ten new mysteries. If it's mystery you want, Lindelof's your man.