There's loads I'd like to see but given the way that teams have played against us this season, trying to waste every last second over goal kicks, corners and subs, then any rule change that stops teams from time-wasting would be a positive step. So for me, I'd ban substitutions in injury time at the end of the game. The referees never take it into account when they blow for the final whistle, and 99.9% of all substitutions are done purely to waste time. Klopp used the tactic against us in the Champions League, and Mourinho used 2 subs in injury team recently when he grinded out a draw against West Ham. It really is anti-football. What rule changes would you like to see?