You are looking from a different point of view it seems. In your eyes you are mining with one CPU only and try to be decentralized.
I think (?).
What part of "scaling" makes you think that?
You're fixated on SBx clusters and trying to sell the concept for mining. Mining doesn't benefit from formal clustering.
IP networks, PCIe, USB all work just as well.
ASIC miners have a small control board and multiple hash boards. GPU mining rigs have multiple GPUs using PCIe.
Why not do something similar? Xeon Phi was an overpriced PCIe compute module that never found a market. It was also lousy
at mining but the concept solves the scaling problem for CPU mining. Common sense would also suggest that fewer, larger CPUs
would scale better than a larger number of SBMs.