Ugh. The 6 year control changing would be completely a pro-big market team issue. I guess that type of thing would completely show that any small market owners who don't fight it do not care about making their teams good.
It would be interesting to see that, at a time when the US major sports are all opening to more and more world involvement, as that would be MLB really changing the Latin American systems. Which - to be fair - currently is such an interesting balance .... you pay big $$ money for young kids, and also tap even younger kids (12yr olds!) into an environment to build toward those paydays. But those kids also have to deal with infrastructure, culture, and many other issues, to perhaps peak in A ball somewhere. Quite the balance of good/bad, currently.