The introduction of the goal-line drop-out would transfer the attacking opportunities from the scrum to the backs.
"It's an attacking option. [It gives] Genuine ability to put teams back under pressure on their own goal-line, it gives you another 10-20 per cent of the field at either end," he said.
That would create more space, especially for the steppers in the side to put their footwork to use.
The captain's referral, an opportunity to raise an appeal, once in a game, if unsuccessful, regarding an infringement in the build-up to a try being scored, or for reasons of suspected foul play, would be a help in games, he said.
"If the NRL (National Rugby League) is anything to go by, the amount of successful challenges could be as low as three out of 10 for a start, before improving to six or seven with time.
"We've got to be really smart with how we do it, have a real clear process," he said. "The players on the field have normally got a good feel for it."
There would be innovation required, especially if the coaching staff felt there was something that needed to be referred, to get the message to the field.
"We'll get a call down. There might be a little hand signal, everyone is going to have a way. There's a real art to it, and you've got to make sure you nail it.
"The players know if there's been a knock-on, or an incident. We'll have ways we can get information down if we need to as quickly as possible," he said.
Robertson confirmed ahead of Friday's game with the Highlanders in Temuka that loose forward Tom Sanders' bad luck with injuries had continued after he suffered a cheek fracture in the side's inter-squad game. He will be out for eight to 10 weeks.
That has seen Brendon O'Connor, the former Blues and Hawke's Bay loose forward, step into one of the two sides the Crusaders will field in the two halves.
None of the side's All Blacks will play in the game.
"We've got a lot of replacement players, [it] could be their one shot at it, to show their hand, to show their craft for us," he said.