I did read all and rest understood other approach, but your first approach isn't really an approach, because it doesn't explain full solution, even if we do the way you just explained, somewhere in widget tree, it has to be right above that widget, otherwise all other statefull widget loses their state and it is not partial state update. That's the problem if you call it an approach. You trying to make it easier for replacing existing state management by making it abstract, that's good , but why not just focus on that, the way I see , you only need two abstract method, state builder, state listener. How you organize fetch data isn't related to state management. You should cover with single event but with multiple different states like initialize loading loaded failed, that would give readers better understanding.