Homogenizing the league on everything is not a good idea. Variation, and the freedom to be different, are what the NBA needs more of. In fact I hope they make some rule changes that strengthen post play so that every big man isn't working exclusively on his 3 pointer to be just like the Warriors.
It's a (relatively) free market, and if the path to the finals is easier in one conference then stars should gravitate towards that. At the end of the day, the best team in the league almost always wins anyway, so it's not like the lower seeded teams are getting screwed here.