He added that if the extended bench was not introduced then the game runs the risk of player burnout with taller players becoming increasingly rare as smaller, pacy types will be preferred by clubs to keep up with the run.
"If you want to watch dynamic football you need to have fresh players to play dynamic football," said Wallace after the Tigers easily accounted for Sydney by 40 points in their NAB Challenge match at Carrara on Saturday night.
"If you want the game to fall away as a spectacle, then have blokes out there who are absolutely stuffed."
His comments come on the back of a staggering 112 interchanges made by both teams in relatively mild conditions by Gold Coast standards, with Richmond nudging ahead of the Swans 59 to 53.
That tally follows 133 recorded between the Kangaroos and Geelong in the previous week's NAB Cup quarter-final, but that game was played in the more humid climate of Cairns with eight players permitted on the sidelines in those conditions.
The Tigers used 25 players at Carrara with 24 for the reigning premiers which still compares favourably to earlier in the day when 56 players took part in the searing heat of Adelaide - Port Adelaide using 31 players and Brisbane 25.
Most observers feel the pace of the game is quicker and Wallace tends to disagree with the AFL's viewpoint that an extended interchange will lead to increased collisions or impact injuries.
"If you don't (increase the bench) you are going to have blokes who are stressed out and have overuse injuries instead," he said.
"The game is at the stage now where we are absolutely overdue for six interchange."
The Tigers coach admitted he has done a backflip on the proposal having previously been in favour of players wanting to play, but says that in the modern game "players cannot continue to keep playing at a standard that keeps the game where we want to watch it."
Wallace claimed that if the consensus is to have more run in the game then you have to have more runners and four specialist midfielders is not enough to keep up with the rotations. That scenario means pacier smaller-type players being required instead of slower talls.
"It will probably cost one our bigger blokes a place in the side because we want to keep the run up in the game but you can't do that if one of the spots is for a tall," he said.
"It is actually restricting the amount of talls that can play the game which I don't think is a good thing either."
