As for actually seeing the alien creature, I like that they showed it without revealing anything about its intelligence or its nature or if it was the only type of life on the moon.
The thing for me though is that by the end of the movie, after the reveal of the creature, it projects the idea that the lives lost isn't as big of a deal because "hey! We discovered new life!"
It removes the distress and sadness that I expected to feel at the loss of the crew. If there wouldn't have been a reveal, you are left conflicted as to whether the mission was worth it.
Just my opinion.
The other route they should've gone, IMO, is to not fully show the creature. Kinda like how they never should've shown the monster in Jeepers Creepers. Just show hazy images or it in the shadows. In movies like that where the monster is surrounded by mystery, I think it cheapens them by revealing them.
This post was edited on 1/19 at 3:44 pm