World Rugby chiefs have declared the "brutal" knockout format of the Rugby World Cup Sevens a success but coaches have urged officials to think twice before using the same system more widely.
World Rugby chief executive Brett Gosper said the move to straight knockout had been a hit with fans.
"It played into the drama of the tournament," Gosper said.
"We're getting a lot of positive feedback from fans about the drama of knockout. It makes each game exciting. It can be brutal for teams, but sport's brutal. What can you say?"
New Zealand coach Clark Laidlaw, however, remained unimpressed.
"I haven't changed my mind," Laidlaw said after his team romped to victory over England in Sunday's final at AT&T Park.
"I don't enjoy the format," Laidlaw added. "Ultimately once you're through the first day, every tournament is straight knockout anyway. So it's not actually any different from a rugby perspective. As a spectacle I'm sure everyone enjoyed it.
"But when you've got coaches and players' livelihoods at stake, and the format isn't quite what we're paid to do... It's an interesting question."
England coach Simon Amor, meanwhile, said that while he was not opposed to the knockout system being used in one-off tournaments, he did not support its introduction on the international circuit.
"I don't think it works in the series," Amor said. "Because one game on one day is not really the nature of sevens. You need a couple of games. But as a standalone one-off event it's okay."
England captain Tom Mitchell said the switch to single elimination had been "interesting."
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