It will fall on the shoulders of a fella named Lindelof.
Unfortunately, because it's trendy to hate on him... even though Spaihts did the majority of the script from what we know. And I doubt he'll pander to fan expectations (we've all seen the theories), so I expect plenty of people here to hate the movie, no matter how good it really is.
Only thing that's doing the movie any wrong at this point is the marketing; they're really letting a lot slip through the cracks as of late, even here with the Verizon minigame, they spoil the fact that
Vickers is stowing an elderly Weyland aboard the Prometheus.
And with this over-marketing, fanboy expectations will grow and grow and grow until their isolated minds can't handle it anymore.