No one really knows the answer to this, but what do you predict? You may vote for more than one since answers aren't all mutually exclusive.
I didn't word the last option clearly. By "break up" I imagined the possibility of MyMagic+ being so publicly unpopular (as new Coke was decades ago) that Disney would do a 180 and sell the idea that people like to be spontaneous at theme parks, and so Disney would move away from pushing pre-planned daily schedules. If this were to happen I could still imagine Disney quietly expanding the unlimited Fastpass option for more guests who pay $$$ (and not just $$$$) at their resorts.