Roos believes the plan to introduce a new bidding structure is almost discouraging what was one of the charms of the game.

Under the proposed plan before clubs, the league would establish a draft value index that assigns a points value for each selection. These points are calculated using statistical analysis of player salaries from 2000 to 2014, which the league says shows the relative market value of players at each draft.

The present bidding system is retained, with clubs bidding or nominating for father-son as well as academy picks. But rather than the nominating club - such as the Swans last year with academy selection Isaac Heeney - only giving up its next available pick for the player, which drew criticism, the nominating club would now need one or more subsequent picks using the value of the points rating.

It is potentially a complicated plan, with Roos concerned about the impact it could have.

"I think it has just evolved to the point it has become so complicated," Roos said. "My point now is, all the AFL needs to do is say: 'Do we really want to encourage father-sons? Yes we do, or no we don't.'

"Where it has got to now is more discouraging father-sons in a sense. The concept almost passes."

Under the proposed system, the No.1 pick is rated at 3000 points, with the last pick - No.74 - not having a score. Clubs also must determine whether a 25 per cent discount is applied to both father-son and academy selections, or a 15 per cent discount applied to father-son selections and 25 per cent to academy selections.

Roos said he would rather return to the system used before 1997, where father-sons avoided the draft.

"I like the old system: if you are father-son, you get on the list - just straight there," Roos said.

"I like the history of it. It was swings and roundabouts, but that has obviously evolved and gone a million miles past that. It has almost appears like we are wrestling with ourselves now - it's either in or it's out.

"My point is, you either love the history of it and you want it to continue or you now say: 'The game has gone too far past it, we want an even playing field,' so you go in the draft."

The initial ruling was changed in 1997, forcing clubs to use a second-round draft pick on a father-son selection. This was updated again in 2007.

One club chief executive has said privately that he is in favour of retaining last year's system, agreeing with Roos that the new proposal is too complicated.

Roos, a former Swans premiership coach, said proposed changes to the academy bidding system had "blurred" the underlying issue, suggesting some clubs believed the Swans had recently had too much access to top talent.

"The problem is the Swans take [Kurt] Tippett, [Lance] Franklin and then clubs can't attack that so they go to the academy. In my view, having spent time in Sydney and time in Melbourne, it's not really about the academy," Roos said.

"It's really about how do we create a fair market and I suppose it's clubs now saying: 'Even though the Swans acted within the rules with Tippett and Franklin, the next stage is we can't have [them get] Isaac Heeney and we can't have Callum Mills - you have two or three top picks.'

"Again, I think the whole argument has got really blurred and really confused."

The Swans had to take Heeney with their first pick in last year's draft, but this was a relatively low 18th overall, considered a steal.

Mills, 17, has been touted as the best player in this year's draft pool, with the midfielder likely to join the Swans as they still will have first dibs at him regardless of any changes to the system.

Collingwood president Eddie McGuire has been a vocal critic of the access the Swans have to top talent through their academy system.