Your solution redefines the word "local" to mean "global." Yes, you can store a component's intrinsically local state as field in your global model and then us

Your solution redefines the word "local" to mean "global." Yes, you can store a component's intrinsically local state as field in your global model and then use a specialized update function that is reached by a switch from your global update function. The question we are addressing is: Is that a good idea?