All movies are cliched, it's just how it is, you need at least a couple of clichés to make a story work, a story without any cliché of any kind doesnt exist, after centuries of storytelling, story tropes are bound to exist and persist.
In an interview on Collider, Collider Frosty told him that he really liked the movie but thought that he could predict every single thing that was going to happen, and wanted something edgier, Blomkamp said this:
BLOMKAMP: It depends on the kind of film you want to make. Elysium really is the film I wanted to make. Again, if I don’t die of Legionnaires’ disease, looking back on it like five films down the line it may be the most expensive film and it will be something I will eternally be proud of. So it was the film I wanted to make. But answering your question, the next film I want to make is far lower budget than this and is ****ing mental. And the film after that is…I think it may end my career. It’s a comedy and I don’t know what will happen and I like that I don’t know what will happen. If it’s too volatile and people just hate it and I get booted out of Hollywood I can go back painting paintings and stuff. To have a bunch of lower budget, very interesting, super edgy films and not have something cinematic- my whole goal with this was cinema, big scale cinema and archetypal storytelling and archetypal lead character. I would not be happy to be a guy that didn’t have that in my body of work. So that’s really the thinking.
So, there you go.