West Coast coach John Worsfold says the game is in good shape and is unconcerned about rule changes.
North Melbourne coach Brad Scott said this week the AFL risked making the game unrecognisable through constant rule tinkering.
Scott made the comments on the eve of the trial cap on interchanges at 80 a game in the NAB Cup.
Worsfold described the capping as a good experiment.
"The AFL will get some good data out of this over all the games over the next two or three weekends and that will be used in making their decision about where it heads next year," he said.
"I don't necessarily think that (it will slow the game down), but I am more than happy to have a look at it and see what we learn from it.
"I was involved in the game when we did less than 80 rotations per game so I sort of know what the game will look like already and it didn't worry me back then."
He didn't see rule changes as having a negative impact.
"There have certainly been rule adjustments and interpretations, the majority of those around player welfare, and I think anything around player safety is great," Worsfold said.
"But there is still plenty of action in the game. We saw one of the great grand finals last year - under all these rules - it was still a pretty spectacular event."
Worsfold said Dean Cox, Josh Kennedy and Matt Rosa would all return against Collingwood on Sunday at Patersons Stadium, but vice-captain Beau Waters and veteran forward Mark Nicoski were likely to be held back again.
He was confident Waters would play on March 9 against Port Adelaide, but Nicoski's return from a hamstring injury was less certain.
Mark LeCras will up his game time against the Pies after a positive return from a knee reconstruction a fortnight ago.
Worsfold said ruckman Nic Naitanui (groin) and midfielder Daniel Kerr (knee) were tracking well and still aimed to play in the round-one western derby on March 23.
Worsfold said he was eager to see what a full-strength Eagles forward line could do this year.
"We are happy with what we learnt from (Ashton) Hams and (Josh) Hill and how they held up last year," he said.
"It is exciting to have them all up and going at the moment."
Troubled youngster Murray Newman trained with the main group yesterday, but Worsfold said he still had areas to address before rejoining full-time training.
The 19-year-old, who is facing a grievous bodily harm charge over a nightclub fight last year and has struggled with his fitness, will not play in the NAB Cup.
Worsfold said he respected the WAFL's decision not to allow Newman to cross to East Perth from Swan Districts 12 months early.
"I am more than happy to have a look at it and see what we learn from it."" *John Worsfold *