Looks a like chance for concept art Scout Walker to be made. Sounds cool...but also
The ANTI-ALIEN EMPIRE has a PAU'AN goon running around. A dark force user...BUT NOT A SITH, WE SWEAR, THERE'S ONLY TWO EXCEPT WHEN THEIR ISN'T.
I assume Vader can't be everywhere at once, big galaxy. I'd rather see someone more bureaucratic...not "obvious villain" looking.