How to improve the Killzone franchise into a universal critical success?

[KingofTrolls]

better story, better characters, bigger world.

Maybe let ppl to chooce which nation they wanna play ( Helg or Vekta ) or even mix them both ? Show interesitng real characters from both sides, stop with the ,, good Vekta - bad Helghan ", maybe some more converstations during game, a little bit a co op ? Also, if u wanna so bad, maybe add vehicles/ new weapons etc