The second movie, Aliens, also didn't have the mood of the first movie, yet was still one of the best movies ever made (IMHO! of course). I don't think the feel of the original is necessary in sequels, and might even be so hard to recreate that it's borderline hubris to try.
I'll probably watch it .. when I feel like doing nothing and thinking the presence of the xenomorph is a coincidence.
I think that is the best attitude one can take. The "domestication" of the xeno is the weakest part of this TV series, but OTOH, the inclusion of all the new monsters is part of what makes A:E so fun. The classic xeno is just one monster among many, now.
There are so many horrible ways to die. Show us more of them, Noah! ;-)