One of the advantages I can see here is that it also helps to draw out the generation early in the morning and into the evening, we’ve got all out panels facing almost perfectly south but one of our peak loads is cooking dinner around 7pm, having some westerly panels would help to provide more PV output when its needed. The battery storage helps with this but I don’t like running the battery down when it’s still quite light out. The extra morning energy is probably less useful unless you’re a big cooked breakfast person 🙂