One of the reasons the Newborn is hated (apart from the design) is that it's never flagged earlier on. In Aliens they have the discussion about "Who's laying these eggs?" which sets up the "Whoa!" when Ripley finds out, rather than "Where the f**k did that come from??" like the Newborn. In the context of the film, the Newborn makes sense, however as an old mate of mine once said, they should've stumbled across the dead Queen much earlier in the film, then get the characters - and audience - wondering "What could've done this?" Setup leads to payoff. In Resurrection, there's payoff with no setup so it doesn't quite work.