Absolutely. Opus really sucks at broad context. I guess I could go back and forth with Opus editing out all its little mistakes or oversights in high-level planning, but I find it much easier to just use Fable for it instead. Basically, I wouldn't use Opus for audit work either. It seems too likely to come back with imaginary issues or hallucinate that everything is great when there's a glaring security flaw. Fable, OTOH, gives me neat lists of details to probe. Fable recommendations are usually reasonable, but sometimes they're prone to over-engineering.