NORTH Melbourne coach Brad Scott fears proposed rules to curb interchange rotations are being made on a "hunch" and without proof to warrant their introduction.

Among the Laws of the Game proposals announced on Wednesday, the League has sought club feedback on capping rotations at 80 per game or altering the interchange bench to three players and one substitute or two players and two substitutes.

The AFL average for interchange rotations per game is 116 this year - significantly up on 57 in 2007 - with medical advice suggesting that the increased speed of matches may be leading to a greater number of collision injuries.

Scott said that that it would be very risky for the AFL Commission to make a decision on a rule change if it wasn't absolutely certain it was the right one.

"There's zero correlation between injury risk and rotations. The AFL admits that there's no correlation. There might be a cause and effect, but there's no proof," he said.

"I think to make a rule change you've got to have absolute proof. I think it's a massive decision to change any rule.

"If you start changing rules and they don't work, then you change rules to fix a rule change to fix a rule change. I think the Commission need to think long and hard before what will be a drastic change to the way we play the game."

Scott said that while he would prefer the rules were left as they are, if pushed he would support a substitute system over capping rotations.

He highlighted that sides that lost players early in a game were at a distinct disadvantage but that a rule change still wasn't warranted for that reason.

"Any cap could be disastrous," he said.

"If we had 80 rotations or 20 a quarter, and we had 18 rotations and we were at the 25-minute mark and two or three guys get injured, do we take two off and leave an injured guy out there? It doesn't make any sense."

Scott also said that interchange rotations - which have passed the 150-mark this year - had gone overboard.

He had expected they would decrease from 2009, but believed they were reaching their limit.

"I think coaches would prefer that we rotate less anyway," Scott said. "There's a natural evolution in football and sometimes we as coaches take things too far one way and then realise we've made a mistake and bring it back.

"Interchanges will naturally start to come down again, but that's my personal view.

"I just wouldn't like to make a rule change to help it evolve."

However, Scott said the role of the Laws of the Game committee would always be important in discussing the health of the game, and how it could be improved.

"One thing's for sure; the product we have now is far better than it was at any time in the history of the AFL."