NRL All Stars coach Wayne Bennett believes the "double try" could be a part of rugby league within five years.

The NRL and Indigenous All Stars will be able to opt for an extra tackle, rather than a conversion, following a try in an attempt to score four extra points when they clash on the Gold Coast in February.

The move is one of several designed to increase the entertainment factor for the game, which will commemorate the anniversary of Prime Minister Kevin Rudd's apology to the Stolen Generation.

Both sides will be able to interchange attacking or defensive players before the extra play and no kicks will be allowed.

NRL boss David Gallop said the league was not yet seriously looking at implementing the change, but Bennett said administrators would need to consider it if fans liked it.

"I've heard it thrown around in the past, it's got some merit," he told reporters as he launched voting for the NRL All Stars line-up on Tuesday.

"At the end of the day you want the fans to buy into it so if it means something to them ... I'm sure the administrators would make the change but it won't happen for four or five years."

The other serious innovation for the February 13 match at Skilled Stadium will be the use of four referees, two on the field at a time.

Broadcast innovations will include the video referee explaining decisions to the commentary team and bench players, trainers and coaches Bennett and Neil Henry all wearing microphones.

The coaches' quarter and three-quarter time addresses to their players will be heard by fans, but Bennett said the public would be surprised by what is actually said.

"They must think at home with the kids in the back room you've got to create havoc with (players) to get them motivated to do something," he said.

"You're dealing with grown men and it's not what I think a lot of fans think."

The six-time premiership-winning mentor, who is also in charge of St George Illawarra, confirmed Australian and New Zealand Test captains Darren Lockyer and Benji Marshall would start as five-eighth and halfback respectively.

"I think about it and I just think the magic they both produce, if they can get it right on the day it will be something to watch," Bennett said.

He said meeting the challenge posed by a proud and highly motivated Indigenous side would be his biggest test.

"That's going to be the part we do have to get right because it is a difference for us," he said.

"They're already motivated, the indigenous side and I should imagine the fan base will be pretty much behind them as well.

"I'm dealing with guys like Darren Lockyer, Benji Marshall, guys that I've coached, they compete at a training session, you tell them there's a game on they want to win that game of touch against each other.

"Their professional credibility's on the line as well so I don't think it's going to be a real issue for us."

The first stage of voting remains open until December 26, with one player from each NRL club to join Lockyer, Marshall and their deputies Cameron Smith and Adam Blair in a 20-man squad.

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