I think the problem is that getting the players to stop SB takes too long; when the changes to the salary formula and GE were made, first we had to analyze the impact of the changes. Pretty recently some of the experimenting teams have concluded the impact is significant enough to adapt your team to. Now we are at the point that this opinion is being spread, and then the masses start to follow by training SB. But until the masses start training SB, a SB player will be hard to come by, because most teams that train them don't sell them. So until that time, LI will still dominate because of the supply for those kind of players. It doesn't mean the system is broken, it just takes time for the adjustments to take effect.
That said, I am seeing increased success with outside offenses too. It seems to me that offenses like motion can be succesful as they naturally boost outside shots, while still having effective inside scoring too (unlike LI, where outside shots get penalized). So I think that with a balanced team, Motion can be a more effective attack than LI.