He’s definitely not leading man material. I think he’s a pretty goofy guy, as in A Cure For Wellness, and works slightly in this, but he’s not given much to really play with.
Ah, it’s actually a bioshphere they created. They didn’t say it would create a new planet just recreate their world. And remember the beginning where they say that the pearls are pretty much what powered their planet/ecosystem.
Also RE: Valerian - he’s not so much Han Solo. He’s more of a petty, vain, egotistical dandy.