It's a few days later and the secondary batch seems to be doing the same thing. Unfortunately I didn't take daily pictures of the first one (I'm doing that with enough projects that it just slipped my mind.) But so far so good.
Given that I misunderstood the original complaint about trying to do this (that it was in fact about a decreased yield) it's tough to tell if my experiment is working any better than anyone else's.
BUT I did order a 20 cup rice steamer and bought a 5 gallon fermenting bucket with the intentions of making a large batch.
I really hope this daisy-chaining works because chinese yeast balls have suddenly become unavailable from Amazon, where I got my first batch.
Will definitely keep this thread updated.
No Asian markets in your area?