I've been saying this for years and I'll say it again.
World Cup games - particularly the final - should not be decided by PK. End of story.
Soccer has modernized with VAR. The need to modernize with the end of the game as well. I don't want to hear that it's dangerous to let them to continue to play. Guess what? Someone would score. If you want to make it a little easier, make the goal 1 foot bigger ever 10 minutes in overtime. It's 2018. I think designing an expanding goal is something Elon Musk could handle in about 5 minutes.