btw the last 30 minutes are a good reason why infinite extra time is an awful idea for deciding elimination games. Terrible football. Campbell could barely run
If one team can't run anymore, all the easier for the other team to score and win as a result of their superior athleticism. The only real complaint is if forwards all got exhausted long before defenders do, which could easily be the case, I don't pretend to know soccer well enough to know one way or the other.
Have extra subs, reduce the number of players on the field, relax offsides rules. Anything is better than deciding it with penalty kicks.