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Tbh i wish they succeed in this experiment.
If they do then more teams are going to approach these tactics and overall we are going to witness a new era of test cricket and at the same time we can have more volatile pitches, so far they only performed on flats deck, except in recent match but Kiwis are in decline so the jury is still out.
England is playing the same aggressive approach in the past couple of years with a strike rate of over 5 and over 6 in some matches, recently against Pakistan they scored well above 6.5 in some of the matches and even against South Africa they had an innings where they scored above 6 and even against New Zealand last year they played like that as if they are playing ODI.