I've always thought that if the Alien was to appear in a new film.
(Prior to 2017's Protomorph Design)
It should use this design as a basis:
Of course, I think the backpipes are
pretty much synonymous with the
creature today, but otherwise I think
everything else in the design, is a
much more flowing incorporation
of the bio-mechanical aesthetic.
The "tongue" is much more
tight to the mouth, giving off
vibes of oral sex, a foreskin
with teeth with a translucent
cover over the whole thing.
Much superior to the tube
with teeth that we received.