After a contentious round of MRP findings the spotlight has again been thrown onto the Panel and its table of offences, which is used to determine penalties.
There was debate around Richmond midfielder Reece Conca's ability to accept a two-match ban this week as well incidents involving Carlton's Marc Murphy and Brisbane Lion Daniel Merrett, which escaped sanction.
On Tuesday night the Tribunal overturned the MRP's misconduct charge against Geelong star Steve Johnson.
Evans said he had contributed to the constant debate around the MRP by exploring an alternative system in 2013, which was not seen as an improvement ahead of this season and was not implemented.
"We did devise an alternate system, but by the time we got to the end of the year we'd found as many red herrings in that system as we thought we might have in the current one," Evans told SEN on Tuesday night.
"We have been running that system in parallel this year, not by the Match Review Panel people themselves but by my staff.
"We have looked at that to see how that would produce results this year and it does throw up a couple of things that we don't like.
"If we were to change the system we would have to eradicate some of those errors."
Evans said it was worth exploring changes to the MRP because "people don't understand the current system".
While Conca was able to accept a two-match ban with an early guilty plea, Evans said he was comfortable with the midfielder's base penalty of 325 points, which is ordinarily a three-week ban.
The incident was graded medium impact instead of low, Evans said, because the MRP took potential for serious injury into account.
"Normally if they were going to upgrade impact they would only upgrade it by one category, and if they felt that didn't produce an appropriate penalty then they could send it direct to the Tribunal as a result," he said.
"Whether you're thinking it's a three-week base penalty or a four-week base penalty, most people would be in that category.
"I was comfortable with what they assessed there and I thought it was around about a three-week penalty."
On Merrett, who was cleared of strking Cameron Pedersen because the MRP deemed he was making a genuine attempt to spoil, Evans said his first reaction had been that the defender was "in enormous trouble".
He said the Lion was "maybe slightly on the lucky side there" but the MRP had "probably got it OK".
Evans said the Panel's interpretation on staging had been consistent this season but that would be up for debate next year.
North Melbourne forward Lindsay Thomas was not cited for staging in round 19 because he was pushed in the back by Geelong opponent James Kelly before throwing himself forward to exaggerate the force.
"If someone has invented the contact outright, [the MRP] has called that staging," Evans said.
"If someone has amplified it, hammed it up, gone to ground early, the Match Review Panel have for the most part stayed away from trying to work out whether the level of force is something they could predict."
