http://news.bbc.co.uk/sport1/hi/football/eng_prem/7233663.stm Prem might move towards more subs in 2009, anyone see this being adopted elewhere? In MLS? What effects do you see this having worldwide and on MLS?
MLS got rid of the only 5 men on the bench rule a few years ago, so they don't have anything to "adopt". Most leagues around the world allow 7 available substitutes(in fact off the top of my head I can only think of the EPL that doesn't).
I think in the Danish Cup (not league) you can only have four, which makes it hard to add a "firepower" sub.
I think you didn't read the article you linked. It has nothing to do with subs, just allows more players on the bench. MLS already adopted this.
Ah yes. They mean 7 available, not 7 actually used (that stays at 3). In that case, there's not much relevant to MLS here.