So a command could either return all different kinds of errors, with informative payloads even, or a generic 'ok', instead of arguably more reasonable (since we

So a command could either return all different kinds of errors, with informative payloads even, or a generic 'ok', instead of arguably more reasonable (since we already return variants with payloads) design of an 'ok' with some useful payload? Or will it literally be a Boolean "success/failure" value? Admittedly, both are possible designs but I just... don't agree with neither of them. Allowing error states to be returned directly by the command while requiring success states to be queried separately already breaks the CQS; and returning a bool is no more useful than returning void: you'll have to do the same follow-up query in both cases.