The Chatsworth pilot is deliberately small: twenty households, one four-person pod, a radius tight enough that the van is never more than fifteen minutes from any gate. It is not a soft launch. It is a test with three specific things to prove.
Pod density. The economics only work if one team of four can genuinely serve fifteen to twenty-five households a week without the service degrading. Below that the cost per household is unaffordable; above it the familiarity that the whole proposition rests on starts to thin out. Ninety days tells us where the real ceiling sits.
Substitution accuracy. Every substitution is a small test of whether the assistant actually knows the household. We will be counting how many were approved first time, how many were sent back, and how many the resident later said they would rather not have had.
Handover discipline. The escort-synchronised handover has to happen the same way every single time, including on the wet Saturday when the van is running late and everybody is tired. A protocol that only holds when things are calm is not a protocol.
Nothing expands until those three read the way they need to. There is no version of this that gets better by growing faster.