Judge orders edits in Wright will dispute

The estate of the late mining billionaire Michael Wright has been ordered to slash its submission appealing the $25 million awarded to his youngest daughter, with a judge saying it needs "some serious editing".

Olivia Mead, the product of Mr Wright's relationship with Elizabeth Anne Mead after he divorced three earlier wives, was aged 19 last year when the Supreme Court of Western Australia ruled the $3 million left to her should be increased more than eightfold.

Mr Wright's father Peter was a business partner of Lang Hancock, the mining magnate father of Gina Rinehart.

On Thursday, Justice David Newnes criticised the length of the documents that had been submitted by both parties, ordering they must be trimmed by some 40 per cent and imposing a 28-day time limit.

"The case is getting lost in the detail," he said.

"It just seems to me the grounds require some serious editing to draw out the heart of the case.

"The issues are not so complex they can't be dealt with expeditiously."

Lawyers for the estate's executor David Lemon lodged nine grounds of appeal, and while Justice Newnes noted a lot of money was involved, it was still a "run of the mill" inheritance dispute.

The substantive argument appeared to be whether the judge who awarded Ms Mead $5 million more than she had asked for, Master Craig Sanderson, had erred in not making adequate provision for the estate, Justice Newnes said.

Ms Mead had only sought about $20 million but in his judgment last year, Master Sanderson concluded she was "in no sense ... spoilt by her father" and deserved far more than she had been left, given her half-sisters Leonie Baldock and Alexandra Burt had both been bequeathed $400 million.

Ms Mead hit headlines when it emerged the list of her expected future needs included some extravagant items - including a $US1.2 million crystal-studded grand piano, a diamond-encrusted bass guitar and upkeep for her pet axolotl.

Master Sanderson said she had just let her imagination run wild the same way most teens would if asked to outline such needs and was not "a gold digger".