Looks good, but I like to think of Aliens as Tank said--sci fi with horror elements. This looks like a horror film with sci fi elements.
Am I the only person that enjoyed Prometheus?
Regarding it being Ripley's daughter, if it serves a logical purpose, sure. But I am so tired of franchises being so desperate to make as many connections between movies as possible--this character is so and so's best friends college roommate or that dude was in the background of the Cantina giving Greedo a handy or whatever.
Regardless, as a pretty big fan of this franchise, I will see it in theaters.