I was able to get a Creative mode setup working completely automatically, without any user intervention needed anywhere, ever.
I didn't take any pictures... but I'll explain a few pieces of it that other people might be having trouble with.
Note that by "machines", I'm excluding the aqueous accumulators and liquid transposers I'm using to fill recycled empty cells with water, or the electrical engines that power them. They're kind of a special case, as all empty cells are dumped straight into them, and they dump water cells straight into a Quantum Chest buffer.
1. Fully RP-managed- managers atop each centrifuge and electrolyzer (except the one being fed electrolyzed water cells) pulling resources from Quantum Chest buffers when needed, retrievers pulling everything out.
2. One single retriever on a 0.5 second timer pulls empty, compressed air, and helium cells from every machine in the system.
3. Non-empty waste cells get filtered into two centrifuge extractors, to be retrieved a second time and filled with water.
4. All electrolysed water cells are dumped into a Redpower Relay atop an electrolyzer, with a filter pulling hydrogen out. The byproducts are pulled by the main byproduct retriever. This is the only machine (aside from the extractors and the fusionreactor itself ) that has no manager attached, and is the only machine where any products are not pulled by retrievers. All aside from the refilling machines, of course.
5. People seem to be having trouble with too much deuterium being converted into tritium. I simply had the retriever pulling deuterium dump those cells into an item detector and into a chest. The item detector pulses a counter, and on every fifth deuterium, the counter pulses two filters and resets itself. One filter sends one deuterium into the reactor itself, the other sends four into the manager network for the second bank of centrifuges. This sends exactly the right amount of deuterium where it needs to go.