A cap of 80 interchanges per game was trialled in the second round of the NAB Cup, which prompted plenty of opposition from players and coaches afterwards.
The cap will be introduced in the season proper of 2014, with the AFL yet to decide on an exact number for interchanges allowed.
Montagna, 29, said he wasn't concerned about it coming in but emphasised the welfare of players needed to factor in the laws of the game committee's final ruling.
"I don't think it's that big an issue. If it comes in, it comes in and we'll adjust," Montagna told AFL.com.au.
"I think as players, you adjust to whatever rules are made.
"It wasn't that long ago when players were getting rotated every five or six minutes - there were probably a few complaints that we were getting taken off the ground too much.
"Now we've got the opportunity to stay on the ground longer and personally, I don't mind it.
"I probably don't have as strong a view as a lot of coaches and players at the moment, that it's going to ruin the game.
"I think it will take its toll on players and there's no doubt it's a higher workload, which is probably the concern from a players' point of view - longevity and the workload.
"That's something that needs to be considered and I'm sure the laws committee will take than into consideration."
Montagna experienced the rule on Sunday during the Saints' 23-point win over the Sydney Swans at Etihad Stadium.
He said he wasn't aware the Swans breached it in the final quarter by making 23 interchanges instead of 20, and could not bring the last three players they rotated off back on the field with a few minutes to go.
The star midfielder also said the only time it was mentioned in the game's preparation was when the Saints were told to halt their inclination to bring themselves off the ground.
"When there's no cap, you've probably got bit more of a licence to bring yourself off if you need a spell, if you've gone hard for five or six minutes," he said.
"The only instruction was that you would have to wait for the coach's instruction to come off this time around because if you've got too many players trying to bring themselves off, you'll hit that cap pretty quick.
"That was really the only instruction and that just means you spend a bit longer out on the field."
Montagna said he felt the weekend's games were a bit more "open" and less congested as a result of players tiring.
Leigh Montagna is a midfielder in NAB AFL Fantasy. He averaged 96.68 points in 2012. Register your team at our AFL Fantasy Hub.
Jennifer Phelan is a reporter for AFL Media. Follow her on Twitter @AFL_JenPhelan.
