You really never miss an opportunity to say something bad about AVPR. Its like what keeps you going, even after all these years. Well I can relate, I do the same with David creating the alien. And now The Predator too.
Why it needed to be warm? The hive webs were also on the maternity ward, who knows where they started it. They are still building the place up, maybe we didn't saw the place where its centered on, where Chet plans to start laying eggs on the future.
Anyway my comment was more in regard the hive design than why the aliens builded on that specific place.
She mirin the ridge gains.