I have heard both Phil Gould and Warren Ryan talk in favour of reducing the number of interchanges in a game down to possibly 8.
The possible benefits - 110kg props who play for 40 minutes a game would not be as common so less damaging tackles from them.
Players would have to reduce their workloads on the field so less 3 and 4 man tackles which will lead to less injuries and more breaks and offloads.
More tired players on the field towards the end of the game should lead to more scoring opportunities.
Downside
Teams that get early injuries will struggle badly.
Anyway - I see it making the players a bit smaller, a bit fitter, a bit less likely to be injured - and it should make scoring a bit easier.
The possible benefits - 110kg props who play for 40 minutes a game would not be as common so less damaging tackles from them.
Players would have to reduce their workloads on the field so less 3 and 4 man tackles which will lead to less injuries and more breaks and offloads.
More tired players on the field towards the end of the game should lead to more scoring opportunities.
Downside
Teams that get early injuries will struggle badly.
Anyway - I see it making the players a bit smaller, a bit fitter, a bit less likely to be injured - and it should make scoring a bit easier.