Melbourne coach Neale Daniher believes low impact incidents that occur behind the play are being too heavily penalised under the new Tribunal system.

While stressing that he considers the system generally to be "much improved" he believes the treatment of low impact behind the play incidents should be reviewed.

Daniher was prompted to speak out by the two-match penalty for an early plea given to Melbourne defender Brad Miller for his tangle with West Coast forward Ashley Hansen at Subiaco on Sunday - an incident Daniher described as "trivial".

"We were disappointed that he was reported - a trivial incident and I think that the AFL have got a system where it's too heavy-handed behind the play," Daniher said ahead of training at the Junction Oval on Wednesday morning.

"I understand where they are coming from with regards to behind the play incidents, but what they do is they mark behind the play incidents too heavily.

"It was low impact, trivial impact and I think they come up with three weeks and that's too heavy handed as far as I'm concerned. Behind the play incidents for low impact may need to be weighted a little bit softer."

Daniher stopped short of declaring the system flawed.

"Flawed is too strong a word - fine-tuning, a bit of fine-tuning, that's what it needs."

"What we're concerned about in football, and rightly so, is king-hits behind the play - absolutely. But where there might be a push to the face, low impact, I think it’s too heavy handed and I'm hoping that's something they'll look at, at the end of the year.

Daniher said the club had considered taking Miller's case to the tribunal but felt that a three-week penalty was too big a risk.

He said the club was unlikely to make a formal submission to the AFL on the matter, but suggested that he was sure the league would get the message.

For all his concerns about the system, Daniher said he was also disappointed that Miller had put himself in a situation to be reported.

"Yeah - so is he, so is he, but … he's one millimetre off having nothing to answer for," Daniher said.

"It's a fine line between being aggressive and what you want in your team and sitting on the other side of the fence."

Miller will miss the Demons' match against St Kilda at the MCG next Sunday and the club's Queen's round 11 Birthday clash with Collingwood.