That is true.Yeah, good point about no player would want to be replaced.
Hamstring strains can be faked - all you've got to do is to be sprinting then suddenly pull up, clutching the back of your thigh. And the player will be listed as a "Test" on the injury list for the next week.
Another thing is having a player get "injured" at 3 quarter time, and the guy to replace him will then be fresh and competing against guys who've already played 3 quarters.
It's not going to be fair when endurance and fitness is such an important part of footy.
Though in the same vein of thought, it already isn't what i'd consider fair when the other team will end up with a higher percentage of rested legs on the ground at the end of the game - which is how the system sits at the moment.
I dunno - i'm thinking that a player faking an injury (even a hammy) would stick out like a sore thumb. It's not easy to fake that 'ow that ****ing hurts' limp/expression.
Maybe i'm just being optimistic.