You’re right, I don’t understand your argument.
I don’t want Kylo to be less original. I like his character the way he is. But, as a viewer, I didn’t find him as an actual threat to the main characters, which makes him a weak MAIN villian. Making one of the other villains (Hux or Snork) the main villian of TFA, could’ve improved the movie, because they both seem to be more experienced and controlled than Kylo. This could’ve also potentially made the movie more original by having a different kind of main villan (especially Hux, since there never was a MAIN military villain in both trilogies, one directly acts against the main characters).