Eddie Jones has slammed efforts by the sport's ruling body to make the game more entertaining through the introduction of ELVs.
The Saracens director of rugby and former Australia coach has warned that the law changes - such as legally being able to collapse the maul and no player restrictions at the line-outs - are in danger of trivialising the sport.
"The important thing is to improve rugby. To judge the ELVs you have to ask 'have they made the game better?"' said Jones, a highly respected figure who led the Wallabies to the World Cup final in 2003.
"Better does not necessarily mean more entertaining. If you want entertainment you watch Twenty20 cricket. We don't want rugby to be Twenty20 cricket."
Dwindling club attendance figures in the southern hemisphere prompted a rethink by the International Rugby Board into the way the game should be played.
But while the SANZAR nations struggle to attract fans, the northern hemisphere is enjoying an unprecedented boom in popularity that runs from club to Test level.
And Jones warned that if the ELVs become permanent the new brand of rugby could start to turn fans away from the sport in Britain and Europe.
"Just have a look at what the World Cup has done in Europe. Rugby in France is big now - they had four club games with 80,000 crowds last season," he said.
"Rugby in France is going through the roof because the World Cup was so successful.
"Watch Bath against Wasps in January - it was one of the best games I've ever seen. There were unbelievable skills levels on show.
"It had everything. If a game is played well and refereed well then there is nothing wrong with it. If you play the game well then it becomes a spectacle.
"If you try to make it a spectacle first and foremost, then you get a simplistic version."
And Jones put forward an idea suggesting two forms of the game can run parallel, with a shortened version mirroring cricket's Twenty20.
"Now there's Test match cricket and Twenty20 cricket but we need to keep Test match rugby.
"Around the world most people want to watch Test rugby. There are pockets around the world who want to see Twenty20 cricket so let's make Twenty12 rugby.
"We could have 12 players, 20 minutes each way with no scrums or line-outs. As the game becomes more professional another form of the game could develop. Sevens hasn't been a success as entertainment.
"It might do well in Hong Kong and Wellington, but around the world. You might find another form of the game springs up eventually."

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| Time | Fixture |
|---|---|
| Guinness Premiership | |
| Sunday 22nd November | |
| Guinness Premiership | |
| 15:00 | London Irish vs Newcastle |
| 15:00 | Leeds Carnegie vs Sale |
| 15:00 | Saracens vs Wasps |
| Friday 27th November | |
| 19:45 | Sale vs Wasps |
| 20:00 | Newcastle vs Northampton |
| 20:00 | Worcester vs Saracens |
| Saturday 28th November | |
| 15:00 | Harlequins vs Gloucester |
| 15:00 | Leicester vs Leeds Carnegie |
| 17:35 | Bath vs London Irish |
| Saturday 5th December | |
| 15:00 | London Irish vs Worcester |
| 15:00 | Gloucester vs Newcastle |
| 15:00 | Northampton vs Bath |
| 17:35 | Saracens vs Sale |
| Sunday 6th December | |
| 15:00 | Wasps vs Leicester |
| Saturday 26th December | |
| 14:15 | Bath vs Gloucester |
| 15:00 | Leicester vs Sale |
| 15:00 | Worcester vs Northampton |
| Sunday 27th December | |
| 15:00 | London Irish vs Saracens |
| 15:00 | Newcastle vs Leeds Carnegie |
| 16:00 | Harlequins vs Wasps |
| Friday 1st January | |
| 15:00 | Sale vs Harlequins |
| 15:00 | Saracens vs Leicester |
| Saturday 2nd January | |
| 15:00 | Northampton vs London Irish |
| 15:00 | Leeds Carnegie vs Bath |
| 15:00 | Gloucester vs Worcester |
| Result |
|---|
| Guinness Premiership |
| Saturday 21st November |
| Guinness Premiership |
| Northampton 26 - 17 Harlequins |
| Friday 20th November |
| Worcester 12 - 12 Bath |
| Gloucester 12 - 9 Leicester |
| Sunday 1st November |
| Newcastle 14 - 3 Worcester |
| Wasps 9 - 15 Leeds Carnegie |
| Saturday 31st October |
| Leicester 29 - 15 Northampton |
| Harlequins 9 - 9 London Irish |
| Bath 11 - 12 Saracens |
| Friday 30th October |
| Sale 28 - 23 Gloucester |
| Sunday 25th October |
| Saracens 21 - 15 Leeds Carnegie |
| Saturday 24th October |
| Gloucester 6 - 35 Wasps |
| London Irish 18 - 12 Leicester |
| Northampton 21 - 16 Sale |
| Worcester 22 - 26 Harlequins |
| Bath 16 - 27 Newcastle |
| Sunday 4th October |
| Leeds Carnegie 10 - 26 Gloucester |
| Wasps 20 - 15 Northampton |
| Newcastle 15 - 22 Saracens |
| Saturday 3rd October |
| Harlequins 13 - 11 Bath |
| Leicester 19 - 14 Worcester |
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Matt Giteau made no excuses after his poor kicking form sentenced Australia to their first defeat against Scotland in 27 years.
Saracens maintained their 100 percent Guinness Premiership record as they clinched a 22-6 home victory over London Wasps on Sunday.
Former New Zealand winger Jonah Luma enjoyed a winning return to rugby on his debut for French side Marseille.
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