I thought that the movie was sub par. When the two main characters were In space it was difficult to tell which was which. I am not sure if it was just my copy but lip synching was way off. The premise, though fun, was hard to believe. Yes movies are about suspending disbelief but the role of the movie is to build the narrative to where something is believable. So I agree that sending 2 kids and a lizard into outerspace is emerson breaking.
Dont see a problem with villains killing subordinates ates. disney did it in most of their early works.