2. Bowling and batting powerplays to be taken between overs 16 and 40
It was amply obvious throughout the World Cup that no side had a clue about using the bowling powerplay strategically. Most aimed to get it done with from the 11th to 15th overs, thereby making it a 15-over stretch of field restrictions, just as it used to be before powerplays were introduced. With their new rule, bowling units shall be forced to think and innovate.

3. No runners allowed for batsmen
It was almost becoming a given that a well-set batsman (especially in a tight chase) shall use a runner in the last few overs to conserve energy. In fact I am sure that spot-fixers placed bets on the point in the match at which a particular batsman shall ask for a runner. Sadly for them they have one less betting option now. However batsmen like Inzamam-ul-Haq and Arjuna Ranatunga would be happy that they don't play the game anymore! This rule, along with the one that prevents batsmen from backing up too much, shall give an opportunity to the fielding team to dismiss a set batsman by drying up the boundaries and forcing his tired legs to run ones and twos.

4. Bowlers may run out a non-striker who is backing up unfairly
Which lover of cricket can ever forget the 'Mankad dismissal'? It occurred during India's tour of Australia on 13 December 1947 in the second Test match at Sydney. India's Vinoo Mankad ran out Australian Bill Brown when, in the act of delivering the ball, he held on to it and whipped the bails off with Brown well out of his crease. The Australian press strongly accused Mankad of being unsportsmanlike, though some Australians, including Don Bradman, the Australian captain at the time, defended Mankad's actions. Since then the laws of cricket were changed and the batsmen had to be warned before being 'mankaded'.