"It felt like a fresh and funny way to blow apart the done-to-death Jane Austen genre by literally dropping this alien into the middle of a costume drama, where he stalks and slashes to horrific effect,"
It's not done-to-death. You might as well say all genre's are overdone in which case, we're at a bit of a loss now aren't we? Someone once said (can't remember who exactly) that there are only 7 stories. It's how you present or tell these stories however, that makes them different. Look at how overdone the romeo and juliet style love story is, but it works, because there is always something different behind the general structure.
I think this idea is just...ridiculous. It really is laughable. Besides, I'll never pay to see the predator slash apart the gorgeous Mr.Darcy!
On a different note, I hated the Keira Knightly version of P&P. In my opinion, she's a terrible actress, who simply pouts at the camera and talks 'posh.' The BBC's Jennifer Ehle and Colin Firth is THE perfect adaptation of Pride and Prejudice. Think I might watch it now while I try to sleep