I hold a similar opinion A:R. While it had a bad B-movie feeling, some of the concepts were solid and fit well with what you could explore with the concept of the xenomorph. I do, however, stand with the few who liked the concept of the Newborn. A "born" xenomorph is already a terrifying concept, and beautifully ironic considering the entire nature of the beast. Uncomfortable but subtle sexual themes was what made it work so well in the first place, and, although the execution in A:R was... poor, I'm still very much open to exploring the concept in the future. That's my opinion!