This is imported from the "Should MLS control its own rules" thread. It's something of a sidelight to that thread, as it turns out that this is a rule MLS actually can control. Other competitions (like the USOC) use four subs So I'm gonna throw it out there as it's own idea--what if MLS went to 4 subs? I think it would have several positive impacts: * It would reward depth. * I think it would aid development a little by making it a little easier for coaches to insert still-developing players into the game. They would be proportionally less worried about running out of subs. * It would probably add a moderate amount of scoring. Scoring tends to increase in late-game situations where fresh legs/tired legs mismatches can be exploited. I can think of a few negatives: * It would add a couple of stoppages and maybe make games take about 1 minute longer to play. * It would be fodder for all the people who want to make a big deal about how MLS has to be different. A lot of these people can't tell the difference between custom and Law, and would try to claim MLS was not complying with FIFA. They'd be wrong, but nonetheless they'd be listened to. In the other thread, it was claimed that too many subs would change the nature of the game, presumably meaning away from being the ultra-endurance sport that it currently is. One could make the case it wasn't always an ultra endurance sport, but I'd accept the argument in the context that people were talking about like 7 subs. But if it was only 4 I'd be very dubious. What other effects do you think it would have? I'm interested to hear.