I say this in full understanding why Subjects are 'non-Rx' in many use cases... but as model fields... it actually seems really useful for achieving 'reactiveness' between otherwise loosely connected parts of an App. I just wondered if anyone had positive experience following this pattern, or it has been avoided either a) because it has identifiable downfalls or b) just because a 'subjects are bad' dogma (in which case that might bear challenging).