I'd only be excited about this rumour, if it were a prelude to a big budget, live action ALIENS VS PREDATOR movie reboot (done right).
I grew out of and got bored of comics, toys, maquettes, fantasy lead figures, anime and video games when I was 11 years old.
To correct, this would be the first aliens animation series. Remember the red herring that was the "cancelled aliens colonial marines anmated series" (based on stills). That turned out to be an alternative advert for the Kenner toyline, which eventually used kids roleplaying with the actual toys instead?
To me, animation = not scary.
True. Even the most "extreme anime" has to overcompensate with stylised violence to even register (urotsukidoji, fist of the north star, ninja scroll). but ultimately the result is more comedic, rather than impactful.
I would also say alien or predator is no longer scary either as we know the creatures powers and abilities. Forgettable, disposible, unrelatable characters doesn't help matters either.