I of course don't disagree that it's possible to achieve some expository complexity in a script, but I think there's a lot of wishful thinking that there's more to what we've seen/been told through leaks than there actually is. My hope is that they went for more direct explanations as a way of healing some of the narrative gaps that Lindelof was all too eager to create in Prometheus, rather than taking the path of least resistance to making a sequel that pleased those who just want to see great Xeno horror again while having a superficial connection to the Prometheus storyline.
I for one am still very, very excited about A:C and have enjoyed what I've read. Would I have personally, as a writer, come up with a different take on this sequel? Absolutely. As a fan of the series, am I eager to see what's sure to be a lot of fun and scary, if not all that smart or game-changing for the franchise? Absolutely.