I think it's irrelevant whether or not Henn is cast again. There are millions of actors out there, of all types of appearances. Many of them potentially great unknowns.
What I
do think is excellent, is that he's made a point of requesting the commissioned artist to base Rebecca's likeness adult off of the person who played her. To me, that's a wonderfully refreshing thing to aim for and shows dedication to
authenticity of the spirit of this beloved series.
Yes, the Dark Horse comics portrayed Rebecca as model-like in '
Book 2', but she looked different in '
Book 1' - and even more different in '
Earth War'. The character never had a consistent physical appearance. She went from a dowdy, depressed-looking brunette, to a sort of Piper Perabo likeness and then to... Whatever Sam Keith was drawing.
It's kind of weird how alike DB's Rebecca portrayal looked like Perabo's then-future self, actually.
http://wallpapersdsc.net/wp-content/uploads/2015/12/220.jpgBut I
like this new concept art. It shows Rebecca to look like a real person and that was something which '
Alien' was renowned for. Dallas, Lambert, Parker... They all looked and acted like real people we could relate to.
Amanda Ripley? She's wearing practical clothing, but she's clearly 'sexed up'. Pretty to look at, but it always felt like shallow motivation on CA's part. I honestly never saw any resemblance to Sigourney Weaver in her (or, especially, Weaver's mother, who that photograph, from '
Aliens', was of), which is what they should have aimed for.
As for '
Terminator Genisys', what's that got to do with anything? I seem to recall a recent '
X-Men' film reset its own continuity, too - and that got some very positive reviews (and lots of commercial success). A film's quality has nothing to do with whether it has a plot device in common with an inferior product or not.