I desperately wanted to like Valerian since I love Fifth Element, while visually striking the story line was pretty meh and OMG the casting was horrible. I think I could casually enjoy it even with the bad story if they had done better job casting.

Yeah. Really wanted to like Valerian and the City of a Thousand Planets, but Dane DeHaan's utter lack of chemistry with his co-star (seemed like he was afraid to even look at her?) absolutely destroyed it in the worst way possible. :(