Re: the wings - I think they're supposed to be armor! Never thought of the original Terran set that way, but I like the "primitiveness" of it, with the visible components and armor!
And maybe SE5 has a fancier render engine than SF does, or that's just a portrait image and the model used in combat will be much less detailed? (Though I highly doubt the former, else the fancier images would surely have been used on the three teaser images which involve starships
)
Anyway, great work!