now is the best time for the US and Europe to pull out of FIFA for good. From what I read there already is talk about it in Europe. Next week there is meeting and the idea will be discussed then. I can guarantee they wouldn't lack sponsor support for a new league. Other nations would quickly follow suit if Europe left.
Nothing will happen. All this is just empty rhetoric. More than half of the nations within the UEFA were supporting Blatter. Only a minority, led by England were against him. Add in the United States and Canada, and you will get the list of countries which are willing to support the "new league". And none of these nations are major powers, as far as football is considered.